WBCS Science Questions Chapterwise

WBCS Mains Science Questions

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Physics

01-Units and Dimension

1. Which of the following is a Vector quantity ? (A) Mass (B) Temperature (C) Displacement (D) Time	Miscellaneous 2012
2. 2. নিম্নোক্ত রাশিগুলির মধ্যে একমাত্র ভেক্টর রাশি হল -- (A) বৈদুতিক আধান (B) তড়িৎ ক্ষেত্রের প্রাবল্য (C) তড়িৎ বিভব (D) বৈদুতিক রোধ	Miscellaneous 2008
3. Unit of Wave length is (A) Cm (B) Pascal (C) Sec. (D) Cm/Sec.	Miscellaneous 2012
4. What is the unit of volume in CGS system ? (A) cm2 (B) cm3 (C) km (D) m	Miscellaneous 2012
5. Parsec is a measure of - (A) brightness of heavenly bodies (B) density of the earth (C) orbital velocity of the stars (D) astronomical distance	WBCS Mains 2016
6. Weber is the unit of (A) Intensity of magnetization (B) Permeability (C) Magnetic flux (D) Magnetic susceptibility	WBCS Mains 2017
7. One nenometer is equal to (A) 10^-15 m (B) 10^-9m (C) 10^-18m (D) 10^-12m	WBCS Mains 2017

03-Laws of Motion and Friction

1. সরল দোলগতিতে গতিশক্তি :- (A) কখনোই শূন্য হয় না (B) সাম্য অবস্থানে শূন্য হয় (C) প্রতি পর্যায়ে দুবার শূন্য হয় (D) সর্বদা সমান থাকে	Miscellaneous 2008
2. Newton's third law gives directly the law of conservation of (A) Momentum (B) Energy (C) Angular Momentum (D) Power	WBCS Mains 2014
3. A car is running on a road at a uniform speed of 60 km/h. The net resultant force on the car is (A) Driving force in the direction of motion of the car (B) Resistance force in the direction opposite to car's motion (C) An inclined force (D) Equal to zero	WBCS Mains 2015

04-Work, Power and Energy

1. একটি রকেট পৃথিবী ছেড়ে চাঁদে অবতরণ করল ও পৃথিবীতে ফিরে এল । এতে সবচেয়ে বেশি শক্তি লাগল ;- (A) পৃথিবী থেকে উঠতে (B) চাঁদে নামতে (C) চাঁদ থেকে উঠতে (D) পৃথিবীতে নামতে	Miscellaneous 2008
2. গ্যাসপূর্ণ একটি আবদ্ধ পাত্র কিছুটা ত্বরণ নিয়ে অনুভূমিক দিকে গতিশীল আছে । পাত্রের মধ্যে গ্যাসের চাপ (অভিকর্ষ বলকে উপেক্ষা করুন)- (A) সর্বত্র সমান (B) সম্মুখতলে অপেক্ষাকৃত কম (C) পশ্চাদতলে অপেক্ষাকৃত কম (D) উপরিতলে অপেক্ষাকৃত কম	Miscellaneous 2010
3. ঊর্ধ্বে নিক্ষিপ্ত বস্তুর শক্তি- (A) সর্বোচ্চ বিন্দুতে সর্বাধিক (B) সর্বোচ্চ বিন্দুতে সর্বনিম্ন (C) সব বিন্দুতে সমান (D) যে কোনো বিন্দুতে সর্বাধিক হতে পারে	Miscellaneous 2010
4. কোনও বস্তুর অভ্যন্তরীণ শক্তি বলতে বোঝায় - (A) বস্তুটির গতিশক্তি (B) বস্তুর অণুগুলির গতিশক্তি (C) বস্তুটির গতিশক্তি ও স্থিতিশক্তির সমষ্টি (D) বস্তুর অণুগুলির গতিশক্তি ও স্থিতিশক্তির সমষ্টি	Miscellaneous 2011
5. In nuclear reaction, there is conservation of- (A) energy only (B) momentum only (C) mass, energy and momentum (D) mass only	WBCS Mains 2016
6. Fat can be separated from milk in a cream separator because of (A) cohesive force (B) gravitational force (C) centripetal force (D) centrifugal force	WBCS Mains 2016
7. A small and a large rain drops are falling through air - (A) the small drop moves fasrer (B) the large drop moves faster (C) both moves with same speed (D) None of the above	WBCS Mains 2016
8. If a bomb dropped from an air plane explodes in mid air - (A) its KE increases (B) its total energy increases (C) its total energy decreases (D) None of these	WBCS Mains 2016
9. Which of the following is used by the mountaineers and the pilots to measure pressure ? (A) Simple barometer (B) Fortin's barometer (C) Manometer (D) Aneroid barometer	WBCS Mains 2016
10. When the milk is churned vigorously, the cream Is separated due to (A) Fractional force (B) Centrifugal force (C) Centripetal force (D) Gravitational force	WBCS Mains 2017

05-Gravitation and Projectile

1. The two satellites of Mars are (A) Io and Europa (B) Ganymede and Callisto (C) Titan and Charon (D) Phobos and Deimos	WBCS Mains 2014
2. A body, falling freely from rest, covers a distance of 4m in the first second. The acceleration due to gravity at that place is (A) 0m/sec2 (B) 9.8m/sec2 (C) 8.0m/sec2 (D) 7.5 m/sec2	WBCS Mains 2014
3. If the Earth-Sun distance is increased by a factor of four, the length of the year will increase approximately by a factor of (A) Two (B) Four (C) Eight (D) Sixteen	WBCS Mains 2014
4. If the radius of the Earth were to shrink by one percent, its mass remaining the same, the value of 'g' on the earth's surface would (A) Increase by 0.5% (B) Increase by 2.0% C) Decrease by 0.5% (D) Decrease by 2.0%	WBCS Mains 2015
5. A weightless rubber balloon is filled with 200 c.c. of water. Its weight in water is equal to (A) 9.8/5 N (B) 9.8/10 N (C) 9.8/2 N (D) Zero	WBCS Mains 2015
6. An artificial satellite orbiting around the earth does not fall down because the attraction of earth (A) does not exist at such distance (B) is neutralised by the attraction of the moon (C) provides the necessary speed for its steady motion (D) provides the necessary accelaration for its motion	WBCS Mains 2015
7. If the earth was stop rotating, the value of 'g' - (A) Increases (B) decreases (C) remain unchanged (D) becomes zero	WBCS Mains 2016
8. Weightlessness experienced in spaceship is due to (A) absence of inertia (B) absence of accelerating force (C) absence of gravity (D) free fall of the spaceship	WBCS Mains 2016
9. A geostationary satellite has an orbital period of (A) 2 hours (B) 6 hours (C) 12 hours (D) 24 hours	WBCS Mains 2017

06-Waves and Sound Waves

10. 1000 Hz কম্পাঙ্কের হুইসেল বাজিয়ে একটি ট্রেন একটি স্টেশনের দিকে এগিয়ে আসছে । স্টেশনে দাঁড়ানো শ্রোতার কানে হুইসেলটির শব্দের আপাত কম্পাঙ্ক হবে- (A) 1000 Hz (B) 1000 Hz অপেক্ষা বেশি (C) 1000 Hz অপেক্ষা কম (D) কোনটিই নয়	Miscellaneous 2010
11. Microwave ovens heat water in food because (A) water is a polar molecule	WBCS Mains 2014
12. Pasteurization of milk in Dairy farm is conducted by (A) Ozone (B) UV rays (C) Chlorine (D) Microwave	WBCS Mains 2017
13. For television broadcasting, the frequency range employed normally varies from (A) 30 — 300 MHz (B) 30 — 300 GHz (C) 30 — 300 kHz (D) 30 — 300 Hz	WBCS Mains 2017

07-Thermodynamics

1. 0^oC উষ্ণতায় 10 গ্রাম বরফ ও 10 গ্রাম জল মিশানো হল মিশ্রণের উষ্ণতা হবে :- (A) 1^oC (B) 0^oC (C) 10^oC (D) 5^oC	Miscellaneous 2008
2. When water is heated from 0C to 10C . Its volume (A) Increases (B) Decreases (C) Does not change (D) First decrease and then increases	WBCS Mains 2015
3. A refrigerator, with its power on, is kept in closed room with its door open. The temperature of the room will - (A) fall (B) rise (C) remain the same (D) None of these	WBCS Mains 2016
4. The celsius temperature is a / an - (A) relative temperature (B) absolute temperature (C) specific temperature (D) approximate temperature	WBCS Mains 2016
5. Which of the following is the example of ideal black body ? (A) Blackboard (B) Kajol (C) A pin hole box (D) None of the above	WBCS Mains 2016
6. Nights are cooler in the deserts than in the plain because — (A) sand radiate heat more quickly than the earth (B) the sky remains clear most of the time (C) sand absorbs heat quickly than the earth (D) None of the above	WBCS Mains 2016
7. What is the principle by which a cooling system (radiator) in a motor car works ? (A) Convection (B) Conduction only (C) Radiation only (D) Both conduction and radiation	WBCS Mains 2016

08-Properties of Solids and Liquids

1. Which type / types of pen uses / use capillary action in addition to gravity for flow of ink ? (A) Fountain pen (B) Ball point pen (C) Gel pen (D) Both ball point and gel pens	WBCS Mains 2016
2. Humidity is the result of (A) Evaporation (B) Transpiration (C) Presence of heat (D) Moisture content in the air	WBCS Mains 2017
3. Water attains maximum density at (A) 0°C (B) 4°F (C) 4K (D) 4°C	WBCS Mains 2017

09-Electricity and Magnetism

1. একটি 100W , 220V বিজলী বাতির প্রবাহমাত্রা হবে -- (A) 511511 amp (B) 611611 amp (C) 311311 amp (D) 411411 amp	Miscellaneous 2008
2. একটি ধনাত্মক তড়িদাহিত কাচদন্ড, একটি ঝুলন্ত বস্তুকে আকর্ষণ করে । তারপর তাকে বিকর্ষণ করে । ঝুলন্ত বস্তুটি হল- (A) ঋণাত্মক তড়িদাহিত (B) ধনাত্মক তড়িদাহিত (C) অনাহিত ও অন্তরিত (D) ভুসংলগ্ন	Miscellaneous 2010
3. একটি মুক্ত চুম্বক শলাকা উত্তর-দক্ষিণে মুখ করে স্থির অবস্থায় আছে । এর উপরে রাখা একটি তারের মধ্যে দিয়ে প্রবাহ পাঠানোর ফলে শলাকাটির N -মেরু পূর্বদিকে বিক্ষিপ্ত হল । তারে তড়িৎ প্রবাহের অভিমুখ কী ?- (A) উত্তর থেকে দক্ষিণ (B) দক্ষিণ থেকে উত্তর (C) পূর্ব থেকে পশ্চিম (D) পশ্চিম থেকে পূর্ব	Miscellaneous 2010
4. For measuring flow of current, the device is used (A) Voltmeter (B) Galvanometer (C) Ammeter (D) Potentiometer	Miscellaneous 2012
5. The acronym CCD stands for (A) charge coupled device (B) control circuit device (C) credit card device (D) configuration control device	WBCS Mains 2014
6. Electron Volt is the unit of (A) Potential difference (B) Charge (C) Energy (D) Power	WBCS Mains 2015
7. Photo electric emission occurs only when the incident light has more than a certain minimum (A) Power (B) Wave length (C) Intensity (D) Frequency	WBCS Mains 2015
8. Fluorescent tubes are fitted with a choke. The choke coil (A) Steps up the line voltage (B) Steps down the line voltage (C) Reduces the current in the circuit (D) Chokes low frequency current	WBCS Mains 2015
9. Which one of the following is printed on a commonly used fluorescent tube light ? (A) 220K (B) 273K (C) 6500K (D) 9000K	WBCS Mains 2015
10. In electric supply lines in India, which parameter is kept constant ? (A) Voltage (B) Current (C) Frequency (D) Power	WBCS Mains 2016
11. What is the most commonly used substance in fluorescent tubes ? (A) Sodium oxide and argon (B) Sodium vapour and neon (C) Mercury vapour and argon (D) Mercury oxide and neon	WBCS Mains 2016
12. Which one of the following is printed on a commonly used fluorescent tube light ? (A) 220 K (B) 275 K (C) 6500 K (D) 9000 K	WBCS Mains 2016
13. Electricians use rubber glaves while working because - (A) rubber is a good conducter (B) rubber is an insulator (C) it is easy to work while wearing gloves (D) None of the above	WBCS Mains 2016
14. Who firstly demonstrated experimentally the existence of electromagnetic waves ? (A) Hertz (B) Romar (C) Marconi (D) Maxwell	WBCS Mains 2016
15. The internal resistance of a dry cell is- (A) equal to that of electrolytic cell (B) smaller than that of electrolytic cell (C) higher than that of electrolytic cell (D) zero	WBCS Mains 2016
16. Iron loses its magnetic property at (A) Melting point (B) Curie point (C) 1000°C (D) Boiling point	WBCS Mains 2017
17. If two bulbs of 25 W and 100 W rated at 220 V, are connected in series across 440 V supply (A) 25 W bulb will fuse (B) 100 W bulb will fuse (C) None of these will fuse (D) Both will fuse.	WBCS Mains 2017

10-Optics

1. লাল আলোতে একটি লেন্সের ফোকাস দৈর্ঘ্য 25 সেমি. নীল আলোতে এর সম্ভাব্য ফোকাস দৈর্ঘ্য কত ?- (A) 25.5 সেমি. (B) 2.55 সেমি. (C) 250 সেমি. (D) 26.5 সেমি.	Miscellaneous 2008
2. গ্লিসারিন তরলের (প্রতিসরাঙ্ক H<sub>1</sub>) মধ্যে একটি কাঁচের দন্ড (প্রতিসরাঙ্ক H<sub>2</sub>) ডুবিয়ে দিলে সেটিকে আর দেখতে পাওয়া যায় না । তাহলে আমরা বলতে পারি - (A) H<sub>1</sub> < H<sub>2</sub> (B) H<sub>1</sub> > H<sub>2</sub> (C) H<sub>1</sub> = H<sub>2</sub> (D) এটি প্রতিসরাঙ্কের মানের উপর নির্ভরশীল নয় নাইট্রোজেন যে বিভিন্ন অক্সাইড গঠন করে তার সংখ্যা - (A) চার (B) পাঁচ (C) দুই (D) তিন	Miscellaneous 2011
3. In a right angled isosceles triangle, the angles that the two equal sides make with the hypotenuse is (A) 30° (B) 45° (C) 60° (D) 90°	WBCS Mains 2014
4. The wave length of visible light lies between (A) 200 - 400 nm. (B) 400 - 700 nm. (C) 700 - 1000 nm. (D) 1000- 2000 nm.	WBCS Mains 2014
5. Blue colour of the sky is due to the phenomenon of (A) Scattering (B) Dispersion (C) Reflection (D) Refraction	WBCS Mains 2015
6. Which one of the following reflects back more sunlight as compared to the other three ? (A) Sand desert (B) Paddy crop land (C) Land covered with fresh snow (D) Prairie grass land	WBCS Mains 2015
7. Rainbow is produced When sunlight falls on drops of rain. The physical phenomena responsible for this are (1) Dispersion (2) Refraction (3) Internal reflection (A) 1 & 2 (B) 2 & 3 (C) 1 & 3 (D) All of the above	WBCS Mains 2015
8. Several colours on the screen of a colour television are produced by mixing lights of colours : (A) Red, Yellow, Green (B) Red, Yellow, Blue (C) Red, Green, Blue (D) Yellow, Green, Blue	WBCS Mains 2015
9. Which one among the following has the highest energy ? (A) Blue light (B) Green light (C) Red light (D) Yellow light	WBCS Mains 2016
10. Cylindrical lens is used by a person suffering from - (A) astigmatism (B) myopia (C) hypermetropia (D) pres biopia	WBCS Mains 2016
11. To an observer on the lunar surface, during the day time the sky will appear to be - (A) light yellow (B) orange (C) blue (D) black	WBCS Mains 2016
12. When viewed In white light, soap bubbles show colours because of - (A) scattering (B) diffraction (C) interference (D) dispersion	WBCS Mains 2016
13. When red glass is heated in dark room it will seem - (A) green (B) purple (C) black (D) yellow	WBCS Mains 2016

11-Atomic Physics

1. নিম্নোক্ত্ কোন দুটি নিউক্লিয়াসে নিউট্রন সংখ্যা সমান ?- (A) Ne20 , Ne21 (B) C12 , N14 (C) C12 , N13 (D) Li7 , Be9	Miscellaneous 2008
2. কোনো পদার্থের পারমানবিক ভর 24 এবং পারমানবিক সংখ্যা 12 হলে তা তুল্যান্কভার হল ;- (A) 12 (B) 24 (C) 16 (D) 48	Miscellaneous 2008
3. কোনো পদার্থের পারমানবিক সংখ্যা 15 হলে তার সর্ব বহিস্থ কক্ষের ইলেকট্রন সংখ্যা হল :- (A) 1 (B) 3 (C) 5 (D) 7	Miscellaneous 2008
4. ক্লোরিনের কোনো আইসোটোপ আছে কি ?- (A) না (B) দুটি (C) তিনটি (D) চারটি	Miscellaneous 2008
5. An atom of an element differs from an atom of one of its isotopes in the number of (A) Neutrons in the nucleus (B) Protons in the nucleus (C) Valence electrons (D) Protons outside the nucleus	Miscellaneous 2012
6. Which of the following is most harmful for human being? (A) α-particles (B) β-particles (C) γ-rays (D) Light rays	Miscellaneous 2012
7. The technique of barium X-ray utilizes the following property of barium sulphate (A) It is opaque to X-rays (B) It is radioactive (C) It is transparent to X-rays (D) It is easily absorbed by tissues	WBCS Mains 2014
8. Which of the following Persons discovered the gamma rays ? (A) Paul Villard (B) Marie Curie (C) J. J. Thompson (D) Adam Osborne	WBCS Mains 2016
9. Particles which can be added to the nucleus of atom without changing its chemical properties are — (A) electron (B) protons (C) neutrons (D) α-particles	WBCS Mains 2016
10. The patient is asked to drink barium sulphate (BaS0₄) for examining the stomach by X-rays because X-rays are (A) less absorbed by heavy atoms (B) more absorbed by heavy atoms (C) reflected by heavy atoms (D) refracted by heavy atoms	WBCS Mains 2016
11. Which one of the following element is essential for the construction of nuclear reactors ? (A) Tungsten (B) Platinum (C) Cobalt (D) Zirconium	WBCS Mains 2017

12-Nuclear physics

1. The reaction that takes place inside the Sun to power it is (A) Fission (B) Fusion (C) Oxidation (D) Decay	WBCS Mains 2014
2. The half life period of an isotope is 2 hours. After 6 hours the fraction of the initial quantity of the isotope left behind will be (A) 1/6 (B) 1/8 (C) 1/12 (D) 1/16	WBCS Mains 2014
3. Which of the following uranium isotopes is mostly used in nuclear reactors and nuclear weapons ?(A) Uranium-232 (B) Uranium-234 (C) Uranium-235 (D) Uranium -238	WBCS Mains 2014
4. Which one is the unit of radio activity ? (A) Curie (B) Tasla (C) Henry (D) Uranium	WBCS Mains 2015
5. In a nuclear reactor the chain reaction is controlled by introducing (A) Iron rods (B) Cadmium rods (C) Graphite rods (D) Platinum rods	WBCS Mains 2015
6. Which of the following is a good nuclear fuel ? (A) Uranium-238 (B) Neptunium-239 (C) Plutonium-239 (D) Thorium-236	WBCS Mains 2015
7. REM is a unit of - (A) radiation dosage (B) binding energy (C) packing fraction (D) radioactivity	WBCS Mains 2016
8. Radioactive substance used in dating geological object is - (A) C - 12 (B) C - 11 (C) C - 14 (D) None of the above	WBCS Mains 2016
9. The isotope used as fuel in nuclear power plant is . (A) U²³⁵ (B) U²³⁸ (C) U²³³ (D) U²³⁹	WBCS Mains 2017

13-Modern physics

1. Which one of the following laser types is used in a laser printer ? (A) Dye laser (B) Gas laser (C) Semi conductor laser (D) Excimer laser	WBCS Mains 2015
2. Who among the following scientists shared the Nobel prize in Physics with his son ? (A) Max Plank (B) Albert Einstein (C) William Henry Bragg (D) Enrico Fermi	WBCS Mains 2015
3. NASA's Deep Impact Space Mission was employed to take detailed pictures of which comet nucleus ? (A) Halley's comet (B) Hale Bopp (C) Hyakutake (D) Tempel - I	WBCS Mains 2015
4. Which one of the following is a space craft ? (A) Apophis (B) Cassini (C) Spitzer (D) Tech sar	WBCS Mains 2015
5. ISRO Launched its —— th satellite on 27th August, 2015 (A) 20 (B) 25 (C) 24 (D) 2	WBCS Mains 2015
6. The electrical circuits used to get smooth D.C. output from a rectified circuit is called - (A) amplifier (B) filter (C) oscillator (D) full wave rectifier	WBCS Mains 2016
7. The frequency band used for radar relay system and television is - (A) VLF (B) UHF (C) VHF (D) EHF	WBCS Mains 2016
8. Which of the following satellites is used in ship to shore, shore to shore and shore to ship communication ? (A) Marisat (B) Comsat (C) Telestar (D) Intelsat	WBCS Mains 2016
9. WIMAX is related to which one of the following ? (A) Biotechnology (B) Space Technology (C) Missile Technology (D) Communication Technology	WBCS Mains 2016
10. Which of the following countries firstly deployed 4G system of mobile telecommunication in world ? (A) South Korea (B) Japan (C) United States (D) England	WBCS Mains 2016
11. Confirmation of the presence of Higgs Boson will justify - (A) both the standard model and superstring theory (B) the unification of all the four fundamental forces (C) the steady state model of the universe (D) the mass of the fundamental particles	WBCS Mains 2016
12. Long distance short wave radio broadcasting uses - (A) Direct wave (B) Sky wave (C) Ionospheric wave (D) Ground wave	WBCS Mains 2016
13. Which one of the following devices has installed Wi-Fi devices in its system ? (A) Smartphone (B) Video Game consoles (C) Computer Printers (D) All of these	WBCS Mains 2016
14. Which of the following Television display is working on the principle of semiconductor ? (A) Plasma display (B) Liquid Crystal display (C) Light emitting diode display (D) None of these	WBCS Mains 2016
15. Who had coined the term television at the firs International Electricity congress held in Paris ? (A) Paul Nipkow (B) Constantin Perskyi (C) J J Thompson (D) Henry Patrick	WBCS Mains 2016
16. Which one of the following sold the world's first mobile television MTV-1 ? (A) Clive Sinclair (B) George Shapiro (C) Clive Clinton (D) William Gladstone	WBCS Mains 2016
17. LEC or Light Emitting Electrochemical Cell is a differed mode of operation of — (A) LEDS (B) CRTS (C) LCDS (D) OLEDS	WBCS Mains 2016
18. From which of the following GSM technologies, the LTE ( Long Term Evolution) is made to the enhancement of telecommunication ? (A) Wi Man (B) CDMA (C) UMTS (D) HSDPA	WBCS Mains 2016
19. Which of the following electromagnetic waves is used by the Bluetooth to exchange data over short distances ? (A) Microwaves (B) Radio Waves (C) X-rays (D) UV-rays	WBCS Mains 2016
20. Which of the following companies launched the 3G mobile telecommunication for the first time in the world ? (A) Nextle in the United States (B) NTT DoCoMo (Japan) (C) Telus Mobility (Canada) (D) Bharati Airtel in India	WBCS Mains 2016
21. Intelsat satellite is used for - (A) radar communication (B) radio communication (C) Intercontenental communication (D) None of the above	WBCS Mains 2016
22. Modem is a device used for - (A) converting analog signals to digital signals (B) modulating signals (C) Either of the above (D) None of the above	WBCS Mains 2016
23. The mass-energy relation is the outcome of - (A) quantum theory (B) general theory of relativity (C) field theory of relativity (D) special theory of relativity	WBCS Mains 2016
24. Silica in amorphous form is used in - (A) photovoltaic cell (B) conductivity cell (C) standard hydrogen electrode (D) None of these	WBCS Mains 2016
25. Which one of the following displays is not the volatile television display ? (A) Plasma (B) Liquid Crystal Display (C) Organic light Emitting Diode (D) Cholesteric Display	WBCS Mains 2016
26. Red shifts is an illustration of - (A) high frequency absorption (B) low temperature emission (C) doppler effect (D) unknown phenomenon	WBCS Mains 2016
27. A transistor is made of (A) doped semiconductors (B) intrinsic semiconductors (C) a metal piece sandwiched between two intrinsic semiconductors (D) None of the above	WBCS Mains 2017
28. A carbon microphone is best used in (A) Dynamo (B) Telephone (C) Transformer (D) None of the above	WBCS Mains 2017
29. In a charged capacitor, the energy is stored as (A) Positive charge (B) both as positive and negative charge (C) the electric field between the plates (D) the potential energy of the capacitor plates	WBCS Mains 2017
30. Line spectrum is produced by (A) the Sun (B) mercury vapour lamp (C) candle (D) electric bulb	WBCS Mains 2017
31. The technique used to transmit audio signal in television broadcasting is (A) amplitude modulation (B) frequency modulation (C) pulse code modulation (D) time division multiplexing	WBCS Mains 2017

14-Computer

1. In computers, the storage medium which cannot usually be modified is known as (A) ROM (B) RAM (C) Hard disk (D) Flash drive	WBCS Mains 2014
2. The abbreviation 'http' stands for (A) HTML Transfer Technology Process	WBCS Mains 2014
3. The following is not a programming language (A) C++ (B) JAVA (C) Office Suite (D) Fortran	WBCS Mains 2014
4. The mode in which a digital adder involving logic gates add data is (A) binary (B) octal (C) decimal (D) hexadecimal	WBCS Mains 2014
5. 'LASER Printers' are an example of (A) Line printers (B) Dot-Matrix Printers (C) Page Printers (D) None of the above	WBCS Mains 2015
6. Encoder is a (A) Integrated circuit (B) Digital circuit (C) VLSI (D) IC chips	WBCS Mains 2015
7. Which one of the following internet protocol version is the most deployed internet layer protocal ? (A) IPV2 (B) IPV4 (C) IPV6 (D) IPV8	WBCS Mains 2016
8. Which one of the following is the web search engine ? (A) Aliweb (B) Jughead (C) Baidu (D) All of these	WBCS Mains 2016
9. Which one of the following persons invented the world's first digital and programmable robot ? (A) George Devel (B) Hisashige Tanaka (C) Korel Capek (D) Joseph Engel Berger	WBCS Mains 2016
10. Spam is related to - (A) Computer (B) Art (C) Music (D) Game	WBCS Mains 2016
11. Junk e-mail is also called - (A) Spoof (B) Spool (C) Sniffer Script (D) Spam	WBCS Mains 2016
12. Which one of the following is a set of program instruction that can attach itself to a file, reproduces itself and spread to other file ? (A) Computer worm (B) Computer virus (C) Trojan horse (D) Phising Scam	WBCS Mains 2016
13. Which one of the following is the most common picking device of the graphic application ? (A) Graphic tablet (B) Joystick (C) Mouse (D) Light Pen	WBCS Mains 2016
14. Which of the following is not the term of Information Technology ? (A) Cyber Space (B) Upload (C) Modem (D) Light Storage	WBCS Mains 2016
15. What is the function of the microsoft office world ? (A) An operating system (B) A downloading application software (C) A word processing software (D) An input device	WBCS Mains 2016
16. Which one of the following computer operating system (OS) is the most commonly used in the Top- 500 super computers of the world ? (A) Unix OS (B) Linux OS (C) Lisa OS (D) Mac OS	WBCS Mains 2016
17. Which one of the following application is commonly used to prepare a presentation or slide show ? (A) Photoshop (B) Powerpoint (C) Internet explorer (D) Outlook express	WBCS Mains 2016
18. Which one of the following discs is used to cold boot a computer ? (A) Set up disc (B) Program disc (C) Diagonostic disc (D) System disc	WBCS Mains 2016
19. Which of the following is the web browser ? (A) Google Chrome (B) Safari (C) Opera (D) All of these	WBCS Mains 2016
20. Which one of the following computers is the world's first commercial computer ? (A) Feffanti Mark-1 (B) Mark-1 star (C) UNIVAC-1 (D) IBM-704	WBCS Mains 2016
21. Which one of the following languages is not the scripting language ? (A) Java scripts (B) Pytheon (C) Perl (D) Lisp 75, Who is referred to as the 'Father of SMS' ? (A) Jamie Lannister (B) Ross Bolton (C) Matti Makkonen (D) None of them	WBCS Mains 2016
22. Who has created the high level programming language for the first time for computers ? (A) Konord Lorenz (B) Konard Zuse (C) Mario Johnson (D) Henry Gladstone	WBCS Mains 2016
23. Which one of the following computer scientists firstly used the term 'bits' ? (A) George Jonhansen (B) Cliff Berry (C) John Atanassoff (D) Claude E Shannon	WBCS Mains 2016
24. What is software ? (A) A type of computer code (B) A computer language (C) A set of instructions for your computer (D) A cover for the computer	WBCS Mains 2017
25. The operating system is the most common type of software. (A) System (B) Communication (C) Application (D) None of the above	WBCS Mains 2017
26. A computer cannot boot if it does not have the (A) compiler (B) loader (C) operating system (D) assembler	WBCS Mains 2017
27. PARAM was developed by (A) IIT Kanpur (B) C-DAC (C) IIT Kharagpur (D) None of the above	WBCS Mains 2017
28. Modern communication systems are based on (A) Analog circuits (B) digital circuits (C) combination of A analog and digital circuits (D) None of the above	WBCS Mains 2017

Misc

1. The gas that India's Mars Mission is looking for as evidence of life is (A) oxygen (B) methane (C) carbon dioxide (D) sulphur dioxide	WBCS Mains 2014
2. A 'back hole' is a body in space which does nol allow any radiation to come out. This property is due to its (A) very small size (B) very large size (C) very high density (D) very low size	WBCS Mains 2015
3. Saturn is the .......... planet from the sun (A) Sixth (B) Eighth (C) Fourth (D) Third	WBCS Mains 2015

Environment

01-Ecology

1. একটি ডেট্রিটাস বা কর্কর খাদ্য-শৃঙ্খল, পতঙ্গ, লার্ভা এবং নিমাটোড - (A) গৌণ খাদক হিসাবে থাকে (B) ডেট্রিটাস কনজিউমার হিসাবে থাকে (C) উত্পাদক হিসাবে থাকে (D) প্রগৌণ খাদক হিসাবে থাকে	Miscellaneous 2010
2. World Environment Day is on (A) 5th September (B) 5th June (C) 15th September (D) 15th June	WBCS Mains 2014
3. Natural source of O2 in environment is (A) Respiration (B) Transpiration (C) Photosynthesis (D) Combustion	WBCS Mains 2014
4. The depth of water of Wet Land does not exceed (A) 6 meters (B) 10 meters (C) 6 feet (D) 10 feet	WBCS Mains 2014
5. Which movement is related with Forest protection ?(A) Chipko movement (b) Narmada Banchao movement(c) Narmada Dam movement(d) Green Bench	WBCS Mains 2014
6. Which bird is highly threatened by PCS ?(A) Sparrow (B) Dove (C) Ostrich (D) Penguin	WBCS Mains 2014
7. Flowing water ecosystem is also called (A) Pelagic (H) Estuarine (C) Lotic (D) Lentic	WBCS Mains 2015
8. The Abyssal Zone is at a depth of - (A) 1000-2000 m (B) 2000-4000 m (C) 4000-6000 m (D) 6000-8000 m	WBCS Mains 2016
9. The lower layer Ionosphere is known as (A) Troposphere (B) Stratosphere (C) Ozonosphere (D) Thermosphere	WBCS Mains 2017
10. In ecosystem, which one shows one way passage ? (A) Free energy (B) Nitrogen (C) Carbon (D) Potassium	WBCS Mains 2017

02-Air Pollution

1. পৃথিবীর গড় উষ্ণতা বৃদ্ধিতে CO₂ এর ভুমিকা -- (A) 20% (B) 14 % (C) 15 % (D) 13 %	Miscellaneous 2008
2. নীচের কোনটি গ্রীণ হাউস গ্যাস ?- (A) মিথেন (B) নাইট্রোজেন (C) ক্লোরিন (D) অ্যাসিটিলিন একটি সংকর লম্বা মটর গাছের সঙ্গে একটি বামন গাছের নিষেক ঘটালে, F<sub>1</sub> গাছের মধ্যে লম্বা : বেঁটে গাছের ফেনোটিফিক হার কী হবে ?- (A) সব গাছ লম্বা (B) লম্বা : বেঁটে, 1 : 3 (C) লম্বা : বেঁটে, 3 : 1 (D) লম্বা : বেঁটে, 2 : 2	Miscellaneous 2010
3. Acid rains occur due to (A) Presence of CO2 in the atmosphere (B) Presence of CO and CO2 in the atmosphere (C) Presence of Ozone in the atmosphere (D) Presence of SO2 and SO3 in the atmosphere	Miscellaneous 2012
4. Which of the following has no green house effect ? (A) CH4 (B) N2O (C) SO2 (D) H2O	Miscellaneous 2012
5. Greenhouse gases emit and absorb radiation within the (A) microwave region (B) infrared region (C) visible region (D) ultra violet region	WBCS Mains 2014
6. The gas used in refrigerators that destroys the ozone layer is (A) ammonia (B) chlorofiuorocarbon (C) nitrous oxide (D) methane	WBCS Mains 2014
7. Depletion of ozone layer increases the incidence of (A) Blood cancer (B) Lung cancer (C) Skin cancer (D) Brain cancer	WBCS Mains 2014
8. Which gas caused industrial disaster in Bhopal in December, 1984 (A) Oleum (B) Fuel (G) MIC (D) Methylamine	WBCS Mains 2014
9. To control the Global warming we should control the use of (A) fossil fuel (B) Renewable energy (C) Solar energy (D) atomic energy	WBCS Mains 2014
	WBCS Mains 2015
11. PAN formation does not include (A) Nitrogen (B) Ozone (C) Hydrogen (D) Hydrocarbon	WBCS Mains 2015
12. The global warming potential of CO2 is (A) 1 (B) 2 (C) 3 (D)	WBCS Mains 2015
13. The following compound does not react with ozone layer (A) CFC (B) HFC (C) Ca (Ocl) Cl (D) CCI	WBCS Mains 2015
14. Diffusion of light in the atmosphere takes place due to (A) Dust particles (B) Carbon dioxide (C) Helium (D) Water vapours	WBCS Mains 2015
15. Acid rain can be caused by the pollution of environment by (A) CO2 and N2 (B) CO and CO2 (C) O3 and CO3 (D) N2O and SO	WBCS Mains 2015
16. Cigarette smoking is harmful for health due to the emission of (A) CO2 (B) CO (C) KMnO4 (D) SO	WBCS Mains 2015
17. Which one of the following is a green house gas ? (A) SO2 (B) CO2 (C) CFC (D) All of the above	WBCS Mains 2015
18. Gravity setting chambers are used in industries to remove —— (A) SO2 (B) Suspended particles (C) NOx (D) Glass particles	WBCS Mains 2015
19. Gas released during Bhopal tragedy was : (A) Sodium isothiocyanate (B) Ethyl isothiocyanate (C) Potassium isothiocyanate (D) Methyl isothiocyanate	WBCS Mains 2017
20. Major aerosol pollutant in jet plane emission is (A) Sulphur dioxide (B) Carbon monooxide (C) Methane (D) Fluorocarbon	WBCS Mains 2017
21. Which one is responsible for white lung cancer ? (A) Asbestos (B) Lead (C) Mercury (D) None of the above	WBCS Mains 2017
22. Mercury is emitted into air by (A) burning coal (B) burning garbage (C) steam boiler (D) diesel engine	WBCS Mains 2017
23. The gases responsible for green house effect are (A) O₂ (B) CO₂(C) N₂ (D) SO₂	WBCS Mains 2017

03-Water Polution

1. Blackfoot disease is caused by which pollutant ? (A) Mercury (B) Arsenic (C) Copper (D) Iron	WBCS Mains 2014
2. Minamata disease is caused by which metal contamination ?(A) Zinc (B) Lead (C) Copper (D) Mercury	WBCS Mains 2014
3. The following term is not involved in air pollution. (A) SMOG (B) MMD (C) DO (D) VC	WBCS Mains 2015
4. Arsenic is associated with (A) Myeloma (B) Melanoma (G) Sarcoma (D) Glioma	WBCS Mains 2015
5. The release of which one of the following into ponds and wells helps in controlling the mosquitoes ? (A) Crab (B) Dogfish (C) Gambusia Fish (D) Snail	WBCS Mains 2015
6. D.D.T. was invented by (A) Paul Muller (B) La Mark (C) Pavlov (D) Darwin	WBCS Mains 2015
7. The first environmental protection act in Independent India was (A) Air pollution act (B) Water pollution act C) Environmental Protection act (D) Hazardous waste act	WBCS Mains 2015
8. The Jharana Khurd village suffered from the contamination of ground water with - (A) arsenic (B) fluoride (C) nickel (D) copper	WBCS Mains 2016
9. The direct and indirect water usage is called- (A) water indicator (B) water usage (C) water balance (D) water footprint	WBCS Mains 2016
10. Maximum water logging in the farmland is observed in- (A) Italy (B) France (C) Pakistan (D) Egypt	WBCS Mains 2016
11. Water blooms are mostly caused by- (A) cyanobacteria (B) diatoms (C) dinoflagellatas (D) green algae	WBCS Mains 2016
12. The largest oil spill so far was recorded from- (A) Alaska (B) Gulf of Mexico (C) Persian Gulf (D) Arabian Sea	WBCS Mains 2016
13. Main source of water and soil pollution is (A) Agro industry (B) Thermal power plant (C) Industrial effluents (D) All of the above	WBCS Mains 2017
14. Red colour of red sea is due to (A) Moss (B) Bacteria (C) Fungi (D) Algae	WBCS Mains 2017

04-Other Polutions

1. The book 'Silent Spring' written by Rachel Carson described the detrimental effects of (A) chemical fertilizers (B) deforestation (C) chemical pesticides (D) green house gases	WBCS Mains 2014
2. Contamination of which metal with soil makes it hard for trees to take up water ?(A) Aluminium (B) Magnesium (C) Copper (D) Zinc	WBCS Mains 2014
3. Mufflers are commonly used to prevent the (A) Radiation pollution (B) Noise pollution (C) Air pollution (D) Thermal pollution	WBCS Mains 2015
4. Physiological disorder may occur when the noise level reaches (A) 110 db (B) 120 db (C) 135 db (D) 145 db	WBCS Mains 2015
5. 'Green Accounting' indicates (A) level of environmental pollution (B) Counting of environmental bodies (C) level of Greenary in the world (D) None of the above	WBCS Mains 2015
6. The following organism is an indicator for air pollution (A) Algae (B) Fungi (C) Lichen (D) Bryophyte	WBCS Mains 2015
7. Biomedical waste disposal Act is dated back to (A) 1992 (B) 1998 (C) 2000 (D) 2002	WBCS Mains 2015
8. GM counter is used to measure the following pollution (A) Noise (B) Water (C) Radioactive (D) Air	WBCS Mains 2015
9. The best way to get rid of bio medical waste is (A) Incineration (B) Auto claving (C) Chemical treatment (D) Land fill	WBCS Mains 2015
10. Kalundborg model is followed in- (A) solid waste management (B) air pollution control (C) zero waste management (D) green technology	WBCS Mains 2016
11. Average per capita municipal solid waste generated per day in India is upto - (A) 100g (B) 200g (C) 300g (D) 500g	WBCS Mains 2016
12. Bioplastic mostly is produced from - (A) bacteria (B) algae (C) fungi (D) protozoa	WBCS Mains 2016
13. The following compound is not a persistent organic pollutant- (A) DDT (B) Dioxins (C) Endosulfan (D) Methane	WBCS Mains 2016
14. The conversion of mercury to methyl mercury is brought about by- (A) cyanobacteria (B) Eubacteria (C) fungi (D) algae	WBCS Mains 2016
15. Which one of the following is a natural disaster ? (A) Bhopal Gas tragedy (B) Chernobyl accident (C) Exxon Valdez oil spill (D) Uttarakhand forest fire	WBCS Mains 2016
16. Most hazardous metai pollutant of automobile battery is (A) Mercury (B) Cadmium (C) Lead (D) Copper	WBCS Mains 2017
17. Domestic waste causes (A) Air pollution (B) Effluents (C) Biodegradable pollution (D) Non-biodegradable pollution	WBCS Mains 2017
18. Which is not a pollutant ? (A) Mercury (B) Arsenic (C) Lead (D) Alumina	WBCS Mains 2017
19. Chemical used as insecticide is (A) γ-BHC (B) Methyl salicylate ( C) Iodoform (D) TNT	WBCS Mains 2017

05-Biodiversity

1. Name the turtle which rests within West Bengal sea coasts (A) Batagurbusca (D) Olive Ridley	WBCS Mains 2014
2. For which mangrove species maximum sweet water influx is required ? t (A) Keora (B) Sundari (C) Kantra (D) Goran	WBCS Mains 2014
3. Black panther is a (A) Panther (B) Jaguar (C) Tiger (D) Leopard	WBCS Mains 2014
4. Which of the following Tiger Reserves is called Kingfishers' Paradise ? (A) Buxa (B) Corbett (C) Sundarban (D) Kaziranga	WBCS Mains 2014
5. How many biodiversity rich centres are there in India ? (A) 1 (B) 2 (C) 12 (D) More than 12	WBCS Mains 2014
6. Hot spots are areas with (A) Low diversity (B) High diversity (C) Genetic diversity (D) Ecological diversity	WBCS Mains 2014
7. An estuary is a (A) Body of water (C) semiclosed coastal body of water	WBCS Mains 2014
8. Ramsar convention (1971) is related to protection of(A) national monuments (B) wetlands (C) national parks and forests (D) coral reefs	WBCS Mains 2014
9. Zoo conservation data is kept by (A) ICBN (B) ICZN (C) WZCS (D) ICTV	WBCS Mains 2015
10. Marsh crocodile conservation in Sundarbans is located in (A) Sajnekhali (B) Sudhanyakhali (C) Kalash Island (D) Bhagabatpur	WBCS Mains 2015
11. Tiger conservation project in India was introduced from (A) 1953 (B) 1963 (C) 1973 (D) 198	WBCS Mains 2015
12. The protected bird of India is (A) Monal (B) Dove (C) Great Indian Bustard (D) Crane	WBCS Mains 2015
13. The oldest animal conserved in India is (A) Tiger (B) Lion (C) Elephant (D) Black Bear	WBCS Mains 2015
14. The number of biodiversity hot spots in India is (A) One (B) Two (C) Three (D) Four	WBCS Mains 2015
15. The convention for biodiversity is dated back to (A) 1973 (B) 1983 (C) 1993 (D) 2003	WBCS Mains 2015
16. The Gulf of Mannar Biosphere Reserve was mainly created to protect - (A) Coral reef (B) Sea horses (C) Sea cucumber (D) All of the above	WBCS Mains 2016
17. Man and Biosphere program was undertaken in- (A) 1971 (B) 1973 (C) 1975 (D) 1980	WBCS Mains 2016
18. Arabori Model is representing- (A) Social forestry (B) Joint forestry (C) Sustainable forestry (D) Farm forestry	WBCS Mains 2016
19. The following is not a biosphere reserve in India- (A) Gulf of Mannar (B) Nanda Devi (C) Bhitarkonika (D) Sundarbans	WBCS Mains 2016
20. The Mangrove forest of India consitute what per cent of the tatal mangrove forest of the world ? (A) 5% (B) 7% (C) 10% (D) 14%	WBCS Mains 2016
21. The species which are extremely sensitive to the environment are also called - (A) keystone species (B) sentinel species (C) endangered species (D) vulnerable species	WBCS Mains 2016

06-Movements and Summits

1. 'Kyote Protocol' signed in 1977 was related to (A) Reduction of green house gas (B) Pulse Polio Immunisation Program (C) World's Youth Policy (D) Nuclear disarmament treaty	WBCS Mains 2015
2. The original article which talks about protection of environment in Indian constitution is (A) 38A (B) 48A (C) 51A (D) 61A	WBCS Mains 2015
3. International Day for the Preservation of the Ozone layer is observed on (A) April 6 (B) February 22 (C) Septembers 16 (D) December 12	WBCS Mains 2015
4. "Green Party" was initiated in (A) Germany (B) Canada (C) France (D) USA	WBCS Mains 2015
5. Agenda 21 was formulated in (A) Stockholm Summit (B) Nairobi (C) Rio Summit (D) Johannesburg Summit	WBCS Mains 2015
6. Global Environment Facility was initiated by (A) WHO (B) UNDP (C) UNEP (D) WMO	WBCS Mains 2015
7. Climate Action Network formed in 1989 included (A) 20 countries (B) 22 countries (C) 28 countries (D) 32 countries	WBCS Mains 2015
8. Silent Valley Movement took place in- (A) Rajasthan (B) Uttarakhand (C) Kerala (D) Madhya Pradesh	WBCS Mains 2016
9. The following country is curbon negative in nature- (A) Nepal (B) India (C) Bhutan (D) China	WBCS Mains 2016
10. The first ecocity of the world was built in - (A) USA (B) France (C) Brazil (D) UK	WBCS Mains 2016
11. Basel convention is dated back to - (A) 1978 (B) 1982 (C) 1985 (D) 1989	WBCS Mains 2016
12. Energy Conservation Act was introduced in India since - (A) 2000 (B) 2001 (C) 2003 (D) 2005	WBCS Mains 2016
13. Anti dumping of liquid waste was taken up in - (A) London (B) Basel (C) Geneva (D) Bern	WBCS Mains 2016
14. The United Nations published the World Water Development Report in - (A) 2005 (B) 2007 (C) 2009 (D) 2011	WBCS Mains 2016
15. What is meant by disaster mitigation ? (A) Planning how to respond to a disaster (B) Returning the community to normal conditions (C) Taking immediate measures to save life and property (D) Minimizing the possible effects of a disaster	WBCS Mains 2016
16. Hydrogen from sea water was first introduced- (A) Spain (B) Italy (C) Finland (D) Iceland	WBCS Mains 2016
17. WCED (World Commission on Environment and Development) report is also called- (A) On common enemy (B) Silent Spring (C) Our common goal (D) Our common future	WBCS Mains 2016
18. The number of tsunamis are highest in- (A) Atlantic Ocean (B) Pacific Ocean (C) Indian Ocean (D) Bay of Bengal	WBCS Mains 2016
19. Which one of the following clay has the highest cation exchange capacity (CEC) ? (A) Bentonite (B) Halloysite (C) Ball clay (D) China clay	WBCS Mains 2017

Chemestry

01-Solid Liquid Gas

1. নীচের কোন ক্ষেত্রে ভৌত পরিবর্তন ঘটে ?- (A) বুনসেন দীপে ম্যাগনেসিয়াম তার উত্তপ্ত করা হলে (B) বুনসেন দীপে প্লাটিনাম তার উত্তপ্ত করা হলে (C) বুনসেন দীপে কপার তার উত্তপ্ত করা হলে (D) জলে পোড়া চুন ফেলা হলে	Miscellaneous 2010
2. The temperature above which a real gas cannot be liquified is known as (A) Critical temperature (B) Boyle temperature (C) Inversion temperature (D) None of the above	WBCS Mains 2015
3. The total energy of a given mass of a gas at a given temperature depends on its (A) Presure (B) Volume (C) Density (D) Temperature	WBCS Mains 2015
4. A sample of gas expands front volume V1 to V2 . The amount of work done by the gas is greatest when the expansion is (A) Adiabatic (B) Equal in all cases (C) Isothermal (D) Isobaric	WBCS Mains 2015
5. A gas is enclosed in a container which is then placed on a fast moving train. The temperature of the gas - (A) falls (B) rises (C) remains unchanged (D) becomes unsteady	WBCS Mains 2016
6. Cocking taken longest time - (A) at Shimia (B) at Mt. Everest (C) at the sea level (D) None of these	WBCS Mains 2016
7. Which of the following is a closed system ? (A) Jet engine (B) Tea placed in steel kettle (C) Pressure cooker (D) Rocket engine during propulsion	WBCS Mains 2016
8. Reverse of swelling of gel is known as (A) Syneresis (B) Intestine (C) Adrenal gland (D) Blood	WBCS Mains 2017
9. 44 g of CO₂ occupies how many litres of CO₂ at STP ? (A) 2.4 (B) 2.24 (C) 44 (D)	WBCS Mains 2017

02-Peroidic Table

1. নিম্নের কোনটি উপচুম্বকীয় ?- (A) O₂ (B) N₂ (C) F₂ (D) H₂	Miscellaneous 2008
2. পর্যায় সারণির 'O' গ্রুপের মৌলগুলিকে বলা হয় - (A) ক্ষার ধাতু (B) হ্যালোজেন (C) চ্যালকোজেন (D) বর গ্যাস	Miscellaneous 2010
3. Which of the following pairs is from the same group periodic table ? (A) Mg, Ca (B) Mg, K (C) Mg, Cu (D) Mg, I	Miscellaneous 2012
4. Tick out the odd combination (A) Cu, Ag, Au (B) Na, K, Rb (C) Zn, Cd, Hg (D) F, Si, I	Miscellaneous 2012
5. The most electronegative among the elements sodium, potassium, oxygen and fluorine is (A) sodium (B) potassium (C) oxygen (D) fluorine	WBCS Mains 2014
6. Which one of the following is also called a stranger gas ? (A) Argon (B) Neon (C) Xenon (D) Nitrous Oxide	WBCS Mains 2015
7. The number of unpaired electrons in Mn²⁺ is - (A) 1 (B) 3 (C) 4 (D) 5	WBCS Mains 2016
8. The melting point of silica is (A) 1723° C (B) 2050% (C) 2300°C (D) 1810°C	WBCS Mains 2017
9. Which one of the following remains in solid state at room temperature ? (A) Cl₂ (B) F₂ (C) I₂ (D) Br₂	WBCS Mains 2017
10. Which element has the greatest ductility property ? (A) Cu (B) Ag (C) Au (D) Pt	WBCS Mains 2017
11. Aluminium is extracted from bauxite by (A) Bayer's process (B) Downs process (C) Solvay process (D) Oswald process	WBCS Mains 2017
12. The most common element in the universe is (A) Fe (B) Ca (C) Al (D) Si	WBCS Mains 2017
13. Number of unpaired electrons present in Cu²⁺. (A) 3 (B) 5 (C) 2 (D) 7	WBCS Mains 2017

03-Oxidation

1) 'যে মৌলটি জলের সঙ্গে বিক্রিয়া করে O₂ উৎপন্ন করে , সেটি হল - - (A) ক্যালসিয়াম (B) সোডিয়াম (C) ম্যাগনেশিয়াম (D) অ্যালুমিনিয়াম	Miscellaneous 2008
2) কোন মৌলটি উভধর্মী অক্সাইড গঠন করে ? - (A) বিসমাথ (B) অ্যান্টিমনি (C) ফসফোরাস (D) সোডিয়াম	Miscellaneous 2011
3) The following substance is not an oxidizing agent (A) Ozone (B) Chloride (C) Potassium (D) Fluorine	WBCS Mains 2014
4) Which one of the following is not peroxide ? (A) BaO₂ (B) Na₂O₂(C) H₂O2 (D) MnO₂	WBCS Mains 2017

04-Acid Base Salt

1. নীচের কোন অ্যাসিডটি সব থেকে তীব্র ?- (A) HCOOH (B) CICH₂COOH (C) FCH₂CH₂COOH (D) CH₃COOH	Miscellaneous 2008
2. কপার 1 : 1 HNO<sub>3</sub> -কে বিজারিত করে- (A) NO -এ (B) NO<sub>2</sub> -এ (C) N<sub>2</sub>O<sub>4</sub> -এ (D)N<sub>2</sub>O<sub>5</sub> -এ	Miscellaneous 2010
3. গাঢ় অবস্থায় একটি অ্যাসিড কপার -এর সহযোগে বাদামী বাষ্প উত্পন্ন করে না এবং লঘু অবস্থায় সিলভার নাইট্রেট -এর দ্রবণের সহযোগে দইয়ের মতো সাদা অধঃক্ষেপ উত্পন্ন করে এবং এই অধঃক্ষেপ অ্যামোনিয়া দ্রবণে দ্রাব্য কিন্তু নাইট্রিক অ্যাসিডে অদ্রবণীয় । অ্যাসিডটি হল - (A) নাইট্রিক অ্যাসিড (B) হাইড্রোক্লোরিক অ্যাসিড (C) সালফিউরিক অ্যাসিড (D) ফসফোরিক অ্যাসিড নিম্নোক্ত বস্তুগুলির কোনটিতে অক্সিজেন নেই ? - (A) বক্সাইট (B) ক্রায়োলাইট (C) ডলোমাইট (D) এপসাম লবণ নিম্নলিখিত রাশিগুলির মধ্যে কোনটি এককবিহীন রাশি ? - (A) আয়তন (B) ত্বরণ (C) গতিশক্তি (D) প্রতিসরাঙ্ক	Miscellaneous 2011
4. একক যে অ্যাসিড সোনা (গোল্ড) -কে দ্রবীভূত করতে পারে তা হল - (A) নাইট্রিক অ্যাসিড (B) হাইড্রোক্লোরিক অ্যাসিড (C) সেলেনিক অ্যাসিড (D) অম্লরাজ (অ্যাকোয়া রিজিয়া)	Miscellaneous 2011
5. . Which of the following acid can dissolve gold ? (A) HNO3 (B) H2SO4 (C) H2SeO4 (D) HClO4	Miscellaneous 2012
6. When a lead storage cell is charged (A) Sulphuric Acid is consumed (B) Sulphuric Acid is formed (C) Lead sulphate is formed (D) Lead is consumed	WBCS Mains 2015
7. The acid employed for etching of glass is (A) HCl (B) HNO₃ (C) Aqua-regia (D) HF	WBCS Mains 2017
8. The hydrolysis of cane sugar is catalyzed by (A) H⁺ (B) Enzymes (C) Mineral acid (D) All of the above	WBCS Mains 2017
9. Hydrochloric acid is also known is (A) Chloric acid (B) Muriatic acid (C) Galic acid (D) Picric acid	WBCS Mains 2017

05-Electrolysis

1. কোন যৌগটি তড়িৎ ও সমযোজী বন্ধন ধারণ করে ? - (A) CH<sub>4</sub> (B) H<sub>2</sub> (C) KCN (D) NaCl	Miscellaneous 2011
2. Ions are formed from neutral atoms by (A) gain of electron (B) loss of electron (C) loss or gain of electron (D) sharing of electron	Miscellaneous 2012
3. Carnalite on electrolysis gives (A) Ca & Cl2 (B) Na & CO2 (C) AI &CI2 (D) Mg & Cl	WBCS Mains 2015
4. Tangent galvanometer is used to measure (A) Steady currents (B) Currents impulses (C) Earth's magnetic field (D) None of the above	WBCS Mains 2017

06-Carbon Compound

Saturated hydrocarbons are termed paraffins because (A) they are much less reactive (B) they are highly reactive (C) they are insoluble in water (D) they are noncombustible	Miscellaneous 2012
Diamond has the Moh's scale hardness number of (A) 5 (B) 7 (C) 10 (D) 9	WBCS Mains 2017

07-Fuel

1. Marsh gas is (A) Methane (B) Ethane (C) Ethylene (D) None of the above	WBCS Mains 2015
2. Land fill gas is other name of (A) CO2 (B) CO (C) H2S (D) Ch4	WBCS Mains 2015
3. Compressed Natural Gas is the other name of (A) Ammonia (B) Methane (C) Hydrogen Sulphide (D) Carbon dioxide	WBCS Mains 2015
4. CNG is the other name of - (A) ethylene (B) ethane (C) methane (D) acetylene	WBCS Mains 2016
5. Crude petroleum is converted to number of hydrocarbon products by (A) Fractional distillation (B) Thermal cracking (C) Steam distillation (D) None of the above	WBCS Mains 2017
6. Mars gas contains (A) CO₂ (B) CH₄ (C) N₂ (D) C₂H₆	WBCS Mains 2017
7. Which fuel has the maximum calorific value ? (A) Charcoal (B) Kerosene (C) Wood (D) LPG	WBCS Mains 2017

08-Metallurgy

1. In the metallurgy of iron, the material obtained from bottom of the blast furnace is (A) Slag (B) Pig iron (C) Cast iron (D) Wrought iron	WBCS Mains 2015
2. The main ore of aluminium is (A) Bauxite (B) Alumina (C) Potash-alum (D) Cryolite	WBCS Mains 2015
3. Which one of the following does not contain silver ? (A) Horn Silver (B) German Silver (C) Ruby Silver (D) Lunar Caustic	WBCS Mains 2015
4. Most glass contain about 71 % by weight of (A) Silicon dioxide (B) Carbon dioxide (C) Sulphur dioxide (D) Calcium Carbonate	WBCS Mains 2015
5. Fly ash contains - (A) Si (B) Al (C) Fe (D) All of these	WBCS Mains 2016
6. Stainless steel contains (A) Fe + Cr + Ni (B) Fe + Ni + Cu (C) Fe + Mn + Cr (D) Fe + Co + Ni	WBCS Mains 2017
7. Bell metal is an alloy of (A) Cu + Sn (B) Cu + Zn (C) Cu + Ni (D) Cu + Mn	WBCS Mains 2017
8. The main radioactive element of pitch blende ore is (A) Ra (B) Th (C) U (D) Po	WBCS Mains 2017
9. The maximum consumption of refractories involves in (A) Glass Industries (B) Iron and Steel Plants (C) Cement Plants (D) Petroleum Industries	WBCS Mains 2017
10. The process of zone refining is used for ultra-purification of (A) Silicon (B) Germanium (C) Gallium (D) All of the above	WBCS Mains 2017
11. The base composition of whiteware body contains (A) Clay, Quartz and Talc (B) Quartz, Clay and Feldspar (C) Talc, Bauxite and Wollastonite (D) Clay, Gypsum and Feldsper	WBCS Mains 2017
12. Which of the following metals do not form amalgam ? (A) Iron (B) Sodium (C) Zinc (D) Magnesium	WBCS Mains 2017
13. Which one of these is not a transitional metal ? (A) Ti (B) Cr (C) Ni (D) Zn	WBCS Mains 2017
14. The Crown glass is an (A) Optical glass (B) Radiation shield glass (C) Safety glass (D) Toughened glass	WBCS Mains 2017
15. (Ni-Mn) ferrite is the example of material (A) ferrimagnetic (B) paramagnetic (C) ferromagnetic (D) None of the above	WBCS Mains 2017
16. Soft iron is used in many parts of electrical machines for its (A) Low hysteresis loss and low permeability (B) High hysteresis loss and low permeability (C) Large density and large retentivity (D) Low hysteresis loss and high permeability	WBCS Mains 2017

09-Inorganic Chemistry

1. নীচের যৌগগুলির মধ্যে কোনটি জলে বেশি দ্রবনীয় ?- (A) Mg (OH)₂ (B) Sr(OH)₂ (C) Ca(OH)₂ (D) Ba(OH)₂	Miscellaneous 2008
2. অ্যালুমিনিয়াম ফসফেট -এর সংকেত- (A) Al<sub>3</sub>(PO<sub>4</sub>) (B) Al<sub>3</sub>(PO<sub>4</sub>)<sub>2</sub> (C) Al(PO<sub>4</sub>) (D) Al<sub>2</sub>(PO<sub>4</sub>)<sub>3</sub>	Miscellaneous 2010
3. অ্যামোনিয়াকে শুদ্ধ করা যায়- (A) গাঢ় H<sub>2</sub>SO<sub>4</sub> দিয়ে (B) গলিত CaCl<sub>2</sub> দিয়ে (C) সোডা চুন দিয়ে (D) ফসফোরাস পেন্টক্সাইড দিয়ে	Miscellaneous 2010
4. পটাশিয়াম ফেরোসায়ানাইড -এর সাথে বিক্রিয়ায় কোন ধাতব আয়নটি চকোলেট রং -এর অধঃক্ষেপ দেবে ? - (A) Fe<sup>3+</sup> (B) Zn<sup>2+</sup> (C) Cu<sup>2+</sup> (D) Al<sup>3+</sup>	Miscellaneous 2011
5. ‘Vanishing colour’ may be prepared by mixing pheolphthalein with (A) carbon dioxide water (B) sulphurous acid (C) dilute solution of caustic soda (D) dilute ammonia solution	Miscellaneous 2012
6. Water gas is a mixture of (A) CO, CH4 and C2H2 (B) CO, CO2 and methane (C) CO and H2 (D) CO and N2	Miscellaneous 2012
7. Which one among the following is called Philosopher's wool ? (A) Zinc Bromide (B) Zinc Nitrate (C) Zinc Oxide (D) Zinc Chloride	WBCS Mains 2015
8. The Redox indicator used in volumetric titration of (A) Bromophynol Blue (B) Methyl Orange (C) Barium diphenyl amine sulphonate (D) Solochrome black-T	WBCS Mains 2017
9. Which one of the following materials does not show piezoelectric behavior ? (A) Quartz (B) Rochelle salt (C) Rutile (D) Barium titanate	WBCS Mains 2017
10. The BET study is performed to measure (A) particle size distribution (B) specific surface area (C) dielectric constant (D) specific gravity	WBCS Mains 2017
11. The potash feldspar is known as (A) Orthoclase (B) Albite (C) Anorthite (D) Dickite	WBCS Mains 2017
12. Forward chemical reactions happened only if (A) AG = 0 (B) AG > 0 (C) AG < 0 (D) None of the above	WBCS Mains 2017
13. Electronic polarization in dielectric materials occurred in frequency around (A) kHz (B) MHz (C) GHz (D) None of the above	WBCS Mains 2017

10-Organic Chemistry

1. ইউরিয়া হল গবেষণাগারে কৃত্রিম উপায়ে তৈরি প্রথম জৈব যৌগ যেটি প্রস্তুত করেছিলেন -- (A) পাস্তুর (B) হেলার (C) ল্যাভেসিয়ার (D) বারজেলিউস	Miscellaneous 2008
2. (X) (Y) (i) ইউরিয়া (i) ফল পাকানোর কাজে (ii) ক্লোরোফর্ম (ii) পচন নিবারক (বীজবারক) (iii) ফিনল (iii) বিবশক (iv) ইথিলিন (iv) সার (X) ও (Y) স্তম্ভদ্বয়ের বিষয়গুলির ঠিক সম্পর্কটি নির্ণয় করো :- (A) (X) (i) (ii) (iii) (iv) (Y) (iii) (iv) (i) (ii) (B) (X) (i) (ii) (iii) (iv) (Y) (iv) (iii) (ii) (i) (C) (X) (i) (ii) (iii) (iv) (Y) (ii) (iv) (i) (iii) (D) (X) (i) (ii) (iii) (iv) (Y) (i) (iv) (iii) (ii)	Miscellaneous 2010
3. রেকটিফায়েড স্পিরিট নিম্নলিখিত কাদের মিশ্রণ ? - (A) 95% ইথানল + 5% মিথানল (B) 95% ইথানল + 5% জল (C) 95% ইথানল + 5% পিরিডিন (D) 100% ইথানল	Miscellaneous 2011
4. Naphthalene has the formula (A) C6H6 (B) C10H5 (C) C12H10 (D) C12H12	WBCS Mains 2014
5. The basic molecule bmds with other molecules to form a polymer is called (A) macromolecule (B) monomolecule (C) monomer (D) monolith	WBCS Mains 2014
6. Which one of the following is used as an explosive ? (A) Phosphorous trichloride (B) Mercuric Oxide (C) Graphite (D) Nitroglycerine	WBCS Mains 2015
7. Which one is the correct sequence in increasing order of molecular weights of the hydro carbons ? (A) Methane, ethane, propane and butane (B) Propane, butane, ethane and methane (C) Butane, ethane, propane and methane (D) Butane, propane, ethane and methane	WBCS Mains 2015
8. Natural rubber is a polymer of (A) Isoprene (B) Styrene (C) Vinyl acetate (D) Butadiene	WBCS Mains 2017
9. Paraffin wax is (A) Ester (B) Alcohol (C) unsaturated hydrocarbons (D) saturated hydrocarbons	WBCS Mains 2017
10. Which one of the following gas is used for artificial ripening of fruits ? (A) Methane (B) Acetylene (C) Ethylene (D) Propane	WBCS Mains 2017
11. Bakelite is the product of (A) addition polymerization (B) condensation polymerization (C) co-polymerization (D) None of the above	WBCS Mains 2017
12. High polymerization of ethylene is done by using (A) Zeolite catalyst (B) V₂O₅ catalyst (C) Zeiglar-Natta catalyst (D) Pt-Mo catalyst	WBCS Mains 2017
13. Diazo-coupling reaction between diazonium salt and naphthol produces (A) Green dye (B) Yellow dye (C) Red dye (D) Blue dye	WBCS Mains 2017
14. The catalyst used in the hydrogenation of oils is (A) V₂O₅ (B) Ni (C) Fe (D) Pt	WBCS Mains 2017

11-Use of Chemical Products

1. Epoxy resins are used as (A) detergents (B) insecticides (C) adhesives (D) moth repellents	WBCS Mains 2014
2. Fly ash solid waste is the by-product of (A) Hydro-electric Power Stations (B) Iron and steel plant (C) Thermal Power Plants (D) Nuclear Power Plants	WBCS Mains 2017
3. Tollen's reagent is (A) Alkaline mercuric chloride (B) Alkaline potassium permanganate (C) Ammoniacal silver nitrate (D) Ammonium citrate	WBCS Mains 2017
4. Which one of following constitutes the common glass composition ? (A) Sodium Silicate (B) Calcium Silicate (C) Calcium and Sodium Silicate (D) Lead Silicate	WBCS Mains 2017
5. Jam-jelly can be preserved by adding small percentage of (A) HCHO (B) EDTA (C) sodium benzoate (D) CH₃COOH	WBCS Mains 2017
6. Chemical formula of Grignard reagent is (A) R-Mg-X (B) R-Ca-X (C) R-Sr-X (D) None of the above	WBCS Mains 2017
7. A mixture of carbon monoxide and hydrogen is called (A) natural gas (B) water gas (C) Producer gas (D) None of the above	WBCS Mains 2017

12-poperties of Molecule

1. Entropy change of a system and its surroundings in equilibrium - (A) increases (B) decrease (C) remains constant (D) either increases or decreases	WBCS Mains 2016
2. An intrinsic semiconductor has forbidden gas of (A) 2eV (B) >2eV (C) <2eV (D) None of the above	WBCS Mains 2017
3. The structure of α-alumina is (A) Trigonal (B) Orthorhombic (C) Hexagonal (D) Cubic	WBCS Mains 2017
4. The specific gravity of ß-quartz is (A) 2.32 g/cc (B) 2.63 g/cc (C) 2.53 g/cc (D) 2.2 g/cc	WBCS Mains 2017
5. Which of the following behaves as chemically most active non-metal ? (A) F₂ (B) He (C) N₂ (D) O₂	WBCS Mains 2017
6. Martensitic steel has following crystal structure (A) BCC (B) FCC (C) BCT (D) HCP	WBCS Mains 2017

Biology

01-Biological Classification

1. The following is an example of a marsupial (A) Whale (B) Bat (C) Mole (D) Kangaroo	WBCS Mains 2014
2. In Bt Cotton, Bt stands for (A) Bacillus thermoglucosidasius (B) Bacillus thuringiensis	WBCS Mains 2014
3. Study of bird's nest is (A) Ornithology (B) Nidology (C) Phenology (D) Ecology	WBCS Mains 2015
4. Salmon fishes are also called (A) Bony fishes (B) Trout (C) Cod (D) Star fish	WBCS Mains 2015
5. Among the following which one lays eggs and does not produce young ones directly ? (A) Echidna (B) Kangaroo (C) Porcupine (D) Whale	WBCS Mains 2015
6. The super oil bag is actually (A) A fungus (B) An algae (C) A bacteria (D) A transgenic bacteria	WBCS Mains 2015
7. 'Equus Caballus' is the scientific name of - (A) Cow (B) Horse (C) Cat (D) Tiger	WBCS Mains 2016
8. Which of the following is used as bio-fertilizer ? (A) Azola (B) Urea (C) Bagasse (D) Clostridium	WBCS Mains 2017
9. Bacteria was discovered first by (A) Leeuwenhoek (B) Louis Pasture (C) Robert Hook (D) Robert Koch	WBCS Mains 2017
10. Who is known as father of taxonomy ? (A) Angler (B) Aristotle (C) Linnaeus (D) Charles Darwin	WBCS Mains 2017

02-Morphology of Plants

1. নিউমাটোফোর পাওয়া যায় - (A) নিমাটোড (B) ম্যানগ্রোভ উদ্ভিদে (C) জেলী ফিসের নিমাটোসিস্টে (D) উপরের কোনোটাই নয়	Miscellaneous 2010
2. আংশিক মূল পরজীবী হল - (A) বাঁশ গাছ (B) চন্দন গাছ (C) ছত্রাক (D) সাইকাস	Miscellaneous 2011
3. Monocot flowers and dicot flowers differ in (A) Monocot flowers are larger than those of dicot (B) Monocot flowers possess no smell (C) Monocot flowers possess no nectaries (D) Monocot flowers are not coloured	Miscellaneous 2012
4. One tree which yields biodiesel is (A) jatropha (B) teak (C) rubber (D) sal	WBCS Mains 2014
5. Leaf spot disease of rice is caused by (A) Fungus (B) Bacteria (C) Virus (D) None of the above	WBCS Mains 2017
6. Black heart of potato is due to (A) deficiency of copper (B) deficiency of boron (C) deficiency of oxygen (D) deficiency of potassium	WBCS Mains 2017
7. Spermology is the study of (A) Leaf (B) Pollen grain (C) Fruit (D) Seed	WBCS Mains 2017

03-Structural Organization in Animals

In proportion of the size of the body which birds lay largest sized eggs. (A) Ostrich (B) Tinamons (C) Vulture (D) Kiwi	WBCS Mains 2015
Ornithology is the study of (A) Mammal (B) Bat (C) Fishes (D) Birds	WBCS Mains 2017

04-Cell Structure

1. দেহকোষের ডিপ্লয়েড নিউক্লিউসকে বলা হয় ;- (A) প্রোনিউক্লিয়াস (B) অ্যাস্ফনিউক্লিয়াস (C) হেমিনিউক্লিয়াস (D) হেটারোক্যারিয়ান	Miscellaneous 2008
2. নিম্নলিখিত কোনটি পিরিমিডিন নয় ?- (A) থাইমিন (B) ইউরাসিল (C) গুয়ানিন (D) সাইটোসিন	Miscellaneous 2008
3. কোশ প্রাচীর পাওয়া যায়- (A) প্রাণী কোশে (B) উদ্ভিদ ও প্রাণী উভয় কোশেই (C) উদ্ভিদ ও ব্যাকটেরিয়া উভয় কোশেই (D) কেবলমাত্র ব্যাকটেরিয়া কোশেই	Miscellaneous 2010
4. The basic unit of life is (A) Nucleic acid (B) Protein (C) Gene (D) Lipoprotein	WBCS Mains 2015
5. Life in the Earth started from (A) DNA (B) Polypeptide (C) RNA (D) Conjugate protein	WBCS Mains 2015
6. Which one of the following sets of elements was primarily responsible for the origin of life on the Earth ? (A) Hydrogen, Oxygen, Sodium (B) Carbon, Hydrogen, Nitrogen (C) Oxygen, Calcium, Phosphorus (D) Carbon, Hydrogen, Potassium	WBCS Mains 2015
7. Which type of cells are involved in allergic response ? (A) Basophils (B) Mast Cell (C) Fibroblast cell (D) Both (A) and (B)	WBCS Mains 2015
8. What is viewed through an electron microscope ? (A) Electrons and other elementary particles (B) Structure of bacteria and viruses (C) Inside of human stomach (D) Inside of the human eye	WBCS Mains 2016
9. The study of the microscopic structure of tissues, is called (A) Orology (B) Osteology (C) Histology (D) Seromology	WBCS Mains 2017
10. The cell wall of xylem cells is rich in (A) Starch (B) Protein (C) Lipid (D) Lignin	WBCS Mains 2017
11. Process of cell division can take place by (A) Heterosis (B) Fusion (C) Mitosis (D) None of the above	WBCS Mains 2015

11- Digestion and Absorption

1. সুষম খাদ্যে কার্বোহাইড্রেট , ফ্যাট এবং প্রোটিনের অনুপাত হল :- (A) 2:1:32:1:3 (B) 2:3:12:3:1 (C) 5:6:15:6:1 (D) 2:1:12:1:1	Miscellaneous 2008
2. লালারসে উপস্থিত উৎসেচকটির নাম - (A) ইরেপসিন (B) কাইমোট্রিপসিন (C) টায়ালিন (D) ট্রিপসিন পারদকে থার্মোমিটার তৈরির কাজে কেন ব্যবহার হয় তার কারণ হিসাবে নিচে চারটি উক্তি দেওয়া আছে । নিচের উক্তিগুলির কোনটি ভুল ? - (A) পারদ তাপের সুপরিবাহী (B) পারদ কাঁচের গায়ে লেগে থাকে না (C) পারদের আপেক্ষিক তাপ খুব বেশি (D) তাপমাত্রা সমান ভাবে বাড়লে, পারদের আয়তনও সমান ভাবে বাড়তে থাকে	Miscellaneous 2011
3. Ascariasis spread through (A) Polluted air (B) Polluted water (C) Contaminated food (D) Bacteria	Miscellaneous 2012
4. The deficiency of cobalt causes the deficiency of (A) Vitamin B2 (B) Vitamin B6 (C) Vitamin B12 (D) Vitamin C	WBCS Mains 2015
5. Lead blocks the biosynthesis of (A) Muscle protein (B) Myaglobin (C) Haemoglobin (D) Ossein	WBCS Mains 2015
6. Which of the following is natural polymer ? (A) Terylene (B) Orion (C) Starch (D) Dacron	WBCS Mains 2015
7. The amino acids are basis units of (A) Lipids (B) Hormones (C) Proteins (D) Vitamins	WBCS Mains 2015
8. Human body requires some minerals for contraction of muscles (A) Calcium, Potassium (B) Iron (C) Calcium, Sodium (D) Calcium, Sodium and Iron	WBCS Mains 2015
9. Which of the vitamins acts as a free-radical inhabitor in a human body ? (A) Vitamin B1 (B) Vitamin C (C) Vitamin E (D) Both (B) and (C)	WBCS Mains 2015
10. Which of the following enzyme is present in saliva ? (A) Pepsin (B) Trypsin (G) Ptyalin (D) Chymotrypsin	WBCS Mains 2015
11. Essential amino acid may also be called (A) Vitamins (B) Hormones (C) Steroids (D) Enzymes	WBCS Mains 2015
12. Essential fatty acids are lowest in - (A) Fish liver oil (B) Sunflower oil (C) Vegetable oil (D) Coconut oil	WBCS Mains 2015
13. Malnutrition in India is mainly attributed to - (A) Protein deficiency (B) Vitamin A deficiency (C) Iron deficiency (D) All of the above	WBCS Mains 2015
14. Highest Biological value is from - (A) Eggs (B) Milk (C) Soyabean (D) Meat	WBCS Mains 2015
15. Best quality proteins are found in highest quantities in (A) Rice (B) Wheat (C) Ragi (D) Bajra	WBCS Mains 2015
16. Vitamin B₁₂ is also known as (A) Pyridoxine (B) Ascorbic acid (C) Riboflavin (D) None of the above	WBCS Mains 2017

12-Breathing

1. শ্বাসনালী ফুলকা দেখা যায় যে প্রাণীতে :- (A) লিমুলাস বা রাজকাঁকড়া (B) মশার লার্ভা (C) মাছ (D) স্যালামেন্ডার	Miscellaneous 2008
2. Animal with a single nostril is (A) Whale (B) Tortoise (C) Python (D) Shark	WBCS Mains 2015

13-Body Fluids and Circulation

1. মানব হৃৎপিণ্ডের প্রাকৃতিক পেসমেকারটি হল :- (A) SA নোড (B) AV নোড (C) মায়োকার্ডিয়াম (D) উপরের কোনটিই নয়	Miscellaneous 2008
2. নিম্নলিখিত কোন প্রাণীতে মুক্ত সংবহন তন্ত্র আছে ?- (A) কেঁচো (B) সাপ (C) আরশোলা (D) ইন্দুর একটি গতিশীল কণার অতিক্রান্ত দূরত্ব যাত্রা পথের সময়ের বর্গের সমানুপাতিক । ওই অবস্থায় বস্তুর ত্বরণ - (A) বৃদ্ধি পাচ্ছে (B) হ্রাস পাচ্ছে (C) শূণ্য (D) ধ্রুবক	Miscellaneous 2010
3. থাইরয়েড গ্রন্থির কম ক্ষরণে হয় - (A) মিক্সিডিমা (B) গ্রেভস বর্ণিত রোগ (C) এক্স অপথ্যালমিক গলগন্ড (D) গলগন্ড	Miscellaneous 2011
4. Ductless glands secrete (A) Blood (B) Tissue fluid (C) Enzymes (D) Hormones	Miscellaneous 2012
5. Islets of Langerhans are responsible for the secretion of (A) testosterone (B) oestrogens (C) insulin (D) progesterone	WBCS Mains 2014
6. The blood cells that defend the body against infections are (A) white blood cells (B) red blood cells (C) platelets (D) erythrocytes	WBCS Mains 2014
7. Young of cockroaches is called (A) Ephyra (B) Nymph (C) Maggot (D) Juvenile	WBCS Mains 2017

15-Locomotion and Movement

1. লজ্জাবতী উদ্ভিদে যে চলন দেখা যায় তার নাম - (A) নিকটিন্যাস্টি (B) ফেটোন্যাস্টি (C) জিওন্যাস্টি (D) সিসমোন্যাস্টি	Miscellaneous 2011
2. The organ related to locomotion in Amoeba sp. is (A) Cilia (B) Flagella (C) Parapodia (D) Pseudopodia	Miscellaneous 2012
3. Human body's main organ of balance is located in (A) Inner part of ear (B) Spine (C) Brain (front part) (D) Pituitary gland	WBCS Mains 2015
4. Growth movement in plant due to light is called (A) Thigmotropism (B) Phototropism (C) Geotropism (D) Hydrotropism	WBCS Mains 2017

16-Neural Control and Coordination

করোটি স্নায়ুর সংখ্যা (মানব দেহ) - (A) 12 টি স্নায়ু (B) 12 জোড়া স্নায়ু (C) 31 টি স্নায়ু (D) 31 জোড়া স্নায়ু	Miscellaneous 2011
In human beings, the number of chromosomes in an ordinary cell is (A) 46 (B) 48 (C) 50 (D) 52	WBCS Mains 2014

17-Reproduction

1. Single cell animals reproduce by (A) Fission (B) Fusion (C) Budding (D) Regeneration	WBCS Mains 2015
2. Mammary glands are modification of (A) Sweat gland (B) Sebaceous gland (C) Salivary gland (D) Lacrimal gland	Miscellaneous 2012
3. In vitro fertilisation is a technique that involves transfer of which one of the following into the fallopian tube ? (A) Zygote only (B) Embryo only upto 8 cell stage (C) Embryo of 32 cell stage (D) Either Zygote or early embryo upto 8 cell stage	WBCS Mains 2015

19-Genetics & Evolution

1. অভিব্যক্তি বা বিবর্তনের তত্ত্ব, 'অর্জিত বৈশিষ্ট্যের বংশানুসরণ' কার মতবাদ ?- (A) ডারউইন (B) ল্যামার্ক (C) ওয়ালেস (D) মেন্ডেল	Miscellaneous 2010
2. A terminator gene in an organism (A) kills the organism (B) switches off metabolism (C) makes the organism sterile (D) terminates all protein pathways	WBCS Mains 2014
3. DNA was discovered by(A) Hargovind Khorana(B) James Watson and Francis Crick(C) Francis Crick and Alexander Fleming(D) James Watson and Hargovind Khorana	WBCS Mains 2014
4. Competitive exclusion principle was also denoted by (A) Darwin (B) Gause C) Odum (D) Wallace	WBCS Mains 2015
5. Location of a particular gene on sex chromosome or autosomes can be identified by (A) Test cross (B) Out cross (C) Back cross (D) Reciprocal cross	WBCS Mains 2015
6. 'Eugenics' is the study of - (A) People of European Origin (B) Genetics of Plants (C) Different races of mankind (D) Altering human beings by changing their genetic components	WBCS Mains 2015

20-Human Health and Diseases

1. ম্যালেরিয়ার জীবাণুর আবিষ্কারক - (A) ল্যামার্ক (B) জি. জে. মেন্ডেল (C) ডি. ভ্রিস (D) রোনাল্ড রস	Miscellaneous 2011
2. Which one of the following insects is the carrier of microfilaria (A) Tabanus (B) Culex mosquito (C) Anopheles mosquito (D) Aedes mosquito	Miscellaneous 2012
3. The technique of MRI uses the phenomenon of (A) Nuclear Magnetic Resonance	WBCS Mains 2014
4. A magic bullet is a (A) bullet that kills a person magically (B) drug that selectively targets a disease without other effects	WBCS Mains 2014
5. MRI stands for(A) Magnetic Resonance Imaging(B) Magnetic Reflection Imaging(C) Machine Readable Imaging(D) Mechanical Reading Instrument	WBCS Mains 2014
6. Malarial parasite could best be obtained from a patient (A) One hour before rise of temperature (B) In state of shivering (C) When temperature comes normal (D) 4 hours after the temperature reaches normal	WBCS Mains 2015
7. Malignant malaria is caused by (A) Plasmodium ovale (B) Plasmodium falciparum (C) Plasmodium vivax (D) Plasmodium malarie	WBCS Mains 2015
8. Robert Webster is known for his work associated with (A) Cardiology (B) Influenza Virus (C) HIV / AIDS (D) Alzheimer	WBCS Mains 2015
9. All are Oncogenic Virus except : (A) HIV (B) Varicella Zoster Virus (C) Influenza Virus (D) Hepatitis – B	WBCS Mains 2015
10. Which of the following is congenital anaemic disorder ? (A) Thalassemia (B) Sickle cell anamia (C) G-6 PD deficiency (D) All of the above	WBCS Mains 2015
11. During pregnancy, vacination can be given against all these diseases except - (A) Hepatities (B) Typhoid (C) Mumps (D) Hepatitis-B	WBCS Mains 2015
12. Tiger mosquitoes are (A) Anopheles (B) Culex (C) Aedes (D) Mansoides	WBCS Mains 2015
13. Rasy Periwinkle gives the drug for - (A) malaria (B) blood cancer (C) hyper tension (D) anaemia	WBCS Mains 2016
14. The isotope used for cancer therapy (A) I⁸⁰ (B) Co⁶⁰ (C) C¹⁴ (D) Ra²²³	WBCS Mains 2017

21- Hormons

Chemically hormons are (A) Amino Acids (B) Fatty Acids (C) Proteins (D) Steroids	WBCS Mains 2015
Blood pressure is under control of (A) Adrenal (B) Pituitary (C) Thyroid (D) Aldosterone	WBCS Mains 2015

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