Environment – Science – WBCS Main Question Paper

Environment - Science - WBCS Main Question Paper
wbcs main environment question paper

WBCS Main Question Paper – 2020

65. Which of the following is not an example of a bio-mass energy source ?

(A) Wood      

(B) Gobar gas       

(C) Nuclear energy      

(D) Coal

 

74. OH radicals in atmosphere play a role of

(detergent of the atmosphere)

(A) Scavenger    

(B) Acidifier     

(C) Reducing agent     

(D) Greenhouse gas

 

75. The widely-used aerobic suspension type of liquid waste treatment system is

(A) Rotating Biological Contractor    

(B) Percolating filter     

(C) Activated sludge process    

(D) Septic tank

 

77. National Ambient Air Quality Standards for major pollutants were notified by CPCB in

(A) 1994      

(B) 1984      

(C) 2004     

(D) 1974

 

78. Minamata disease is caused by

(1956, mercury poisoning)

(A) As vapour      

(B) Hg vapour       

(C) organic Hg     

(D) Dissolved As

 

79. The Saffron Revolution is associated with ________ .

(A) Egg       

(B) Oil seeds      

(C) Solar Energy     

(D) Onion

 

81. The name Amoco Cadiz is related with

(coast of France)

(A) Nuclear waste site      

(B) Oil slick     

(C) Toxic cloud      

(D) Forest fire

 

82. The Bhopal Disaster occurred on

(C2H3NO)

(A) December 3, 1984     

(B) January 4, 1984     

(C) August 14, 1984     

(D) None of the above

 

83. Sea water is

(pH 8.1)

(A) acidic      

(B) alkaline     

(C) neutral     

(D) hypotonic

 

84. Gobar gas contains mainly

(A) Ethylene       

(B) Methane     

(C) Hydrogen and Ethylene     

(D) Hydrogen and Oxygen

 

85. Air pollutant causing leaf curling is

(A) SO2     

(B) O3      

(C) H2S     

(D) CO

 

87. Black foot disease is caused by

(A) excess of fluoride in water

(B) deficiency of iodine in water

(C) excess of arsenic in water

(D) excess of iodine in water

 

88. Which pollution causes Jaundice ?

(Hepatitis A)

(A) Water     

(B) Air      

(C) Land      

(D) Thermal

 

91. Lightning in the atmosphere produces

(nitric oxide)

(A) NO      

(B) CO      

(C) CO2      

(D) NH3

 

92. In turbidity analysis, formazin is used

(A) to stabilize the samples.

(B) to preserve the sample.

(C) to make turbidity standard.

(D) to remove colour interferences

 

94. MPN (Most Probable Number) indicates

(water pollution)

(A) Thermal pollution     

(B) Air pollution       

(C) Faecal pollution      

(D) Industrial pollution

 

96. Which secondary pollutant is produced by UV rays of sun lights ?

(A) SO2       

(B) CO    

(C) Fluorides       

(D) O3

 

97. The major stratospheric ozone layer over Antarctica was discovered in

(A) 1983     

(B) 1985      

(C) 1987     

(D) 1980

WBCS Mock Test

 

98. Peeling of Ozone umbrella is due to

(chlorofluorocarbon)

(A) CFCs      

(B) PAN     

(C) CO2     

(D) Coal burning

 

101. The Environmental Protection Act was enacted in

(A) 1986      

(B) 1985     

(C) 1987    

(D) 1972

 

105. Which species of chromium is toxic in water ?

(Hexavalent chromium)

(A) Cr+2      

(B) Cr+3      

(C) Cr+6     

(D) Cr-6

 

106. Cyclone collector is used for minimizing

(A) Radioactive pollution       

(B) Air pollution      

(C) Noise pollution     

(D) Water pollution

 

109. Result of Ozone hole is

(A) greenhouse effect    

(B) global warming      

(C) acid rain     

(D) UV radiations reach the earth

 

110. Rajaji National Park is situated in

(1983, Uttarakhand)

(A) Delhi       

(B) Uttarakhand      

(C) Tamil Nadu     

(D) Karnataka

 

115. Photochemical smog is related to pollution of

(A) air      

(B) water     

(C) soil     

(D) nostoc

 

116. Which one of the following is used as microbial indicator of water contamination ?

(A) Coliform bacteria     

(B) Giardia     

(C) Cryptosporidium     

(D) Tobacco mosaic virus

WBCS Mock Test

 

117. Pollutants in soil can be broken by microorganisms. The process is called

(A) Probiotics      

(B) Bioremediation     

(C) Bio-augmentation     

(D) None of the above

 

119. Animal species protected in Kaziranga National Park is

(A) Panthera Leo      

(B) Rhinoceros Unicornis      

(C) Panthera Tigris       

(D) Macaca Mulatta

 

120. BOD is related to

(A) detergents      

(B) putrescibility      

(C) inorganic pollutants       

(D) organic pollutants

 

121. In which Industry, do workers suffer from Byssinosis ?

(Brown Lungs)

(A) Cardboard       

(B) Textile      

(C) Plastic      

(D) Paper

 

123. The most abundant pollutant in the atmosphere among hydrocarbons is

(CH4)

(A) methane      

(B) propane      

(C) butane     

(D) bezypyrene

 

124. Nalgonda method was developed by Indian Scientist to remove which chemical species from water ?

(A) Iron      

(B) Manganese      

(C) Chromium       

(D) Fluoride

WBCS Mock Test

125. Which of the following is used as a coagulant for removal of phosphates in water ?

(wastewater treatment )

(A) Aluminium sulphate     

(B) Iron carbonate     

(C) Copper sulphate     

(D) Potassium chromate

 

129. BOD stands for

(A) Biochemical Oxygen Demand

(B) Biotic Oxygen Dropping

(C) Biochemical Oxygen Dressing

(D) None of the above

 

131. Kanha National Park is situated in

(Madhya Pradesh)

(A) Assam     

(B) Rajasthan    

(C) Uttar Pradesh     

(D) Madhya Pradesh

 

135. The Namami Gange Scheme was announced on ________.

(A) 07/07/2016     

(B) 01/01/2016    

(C) 01/03/2016      

(D) 31/03/2016

 

136. Ozone day is

(A) January 30       

(B) September 16     

(C) April 21    

(D) December 25

 

137. Cement dust is characterized by very fine particles. Which of the following air pollution control devices is appropriate for removing them from hot exhaust gases emanating from cement kiln ?

(A) Bag house      

(B) Cyclone      

(C) Venture scrubber      

(D) Electrostatic precipitator

 

138. Activated sludge is associated with management of waste and it is a kind of

(wastewater treatment)

(A) Chemical treatment    

(B) Mechanical means       

(C) Biological treatment     

(D) Nuclear means

WBCS Mock Test

 

148. E. Coli is used as an indicator organism to determine pollution of water with

(Escherichia coli)

(A) pollen of aquatic plants     

(B) heavy metals       

(C) faecal matter     

(D) industrial effluents

 

151. Ozone undergoes photolysis due to ultraviolet radiations of wavelength

(A) <320 nm      

(B) <400 nm      

(C) <500 nm      

(D) <600 nm

 

152. The largest Tiger Reserve in India is _____.

(1983, Kurnool, Andhra Pradesh)

(A) Sundarban     

(B) Periyar     

(C) Kanha      

(D) Nagarjunsagar Srisailam

 

154. Kanha National Park is famous for

(A) Rhinoceros      

(B) Tiger     

(C) Birds     

(D) Crocodiles

 

155. Overgrazing causes

(A) Negative pollution      

(B) Positive pollution       

(C) Soil erosion      

(D) Reduction in crop yield

 

157. Biome have

(A) plant communities     

(B) animal communities    

(C) trees only      

(D) Both (A) and (B)

 

158. MAB stands for

(1971, UNESCO)

(A) Man and Biosphere

(B) Man, Antibiotic and Bacteria

(C) Man and Biotic Community

(D) Mayer, Andersand and Bisby

 

WBCS Mock Test

 

WBCS Main Question Paper – 2019

2. Loss of water is maximum from
(A) leaf surface
(B) soil surface
(C) root
(D) stem surface
 
3. The maximum width of tropopause is
(average of 9 km – poles,17 km – Equator)
(A) 10 Km
(B) 15 Km
(C) 20 Km
(D) 25 Km
 
4. The Thermosphere starts from Earth’s surface at a distance of
(A) 80 Km
(B) 85 Km
(C) 100 Km
(D) 125 Km
 
5. The following bacteria may be used to mitigate oil spill:
(A) Bacillus
(B) Pseudomonas
(C) E coli
(D) Nitrobacter
 
6. The following gas maybe involved in stone concer:
(A) N2
(B) SO2
(C) CO2
(D) H2S
 
7. The temperature of water for measuring BOD should be maintained at
(A) 200c
(B) 300c
(C) 350C
(D) 400c
 
8. Silent Valley became national park in the year
(A) 1980
(B) 1984
(C) 1988
(D) 1990
 
11. The following name is associated with rain water harvesting:
(Waterman of India – Rajasthan )
(A) Rajendra Singh
(B) Baba Amte
(C) S. C. Nair
(D) Medha Patkar
 
12. DDT does not contain
(C14H9Cl5 – insecticide)
(A) C
(B) H
(C) P
(D) Cl
 
13. Habitats resulting from lava flow is an example of
(A) primary succession
(B) secondary succession
(C) autogenic succession
(D) allogenic succession
 
15. The following is a sedimentary cycle:
(A) P cycle
(B) N2 cycle
(C) C cycle
(D) O2 cycle
 
16. Fluoride in environment primarily comes from
(A) topaz
(B) apatite
(C) fluorite
(D) phosphorite
 
18. The fresh water percentage of Earth is
(A) 1%
(B) 2.5%
(C) 5%
(D) 10%
 
20. The Disaster Management Act was enacted
(A) 2000
(B) 2003
(C) 2005
(D) 2010
 
51. What is ‘Arribada’?
(A) Mass Nestling of Olive Ridley
(B) Setting up a habitat by Red Panda
(C) Colony formation by Penguin
(D) None of the above
 
55. Where is the shola grassland found in India?
(A) Western Ghats
(B) Sundarban
(C) Andaman-Nicobar
(D) Himalayas
 
71. Which of the Indian Lake possess 20% of India’s sea-grass distribution?
(A) Chilka Lake
(B) Loktak Lake
(C) Dal Lake
(D) Mansar Lake
 
101. What is Incinerator?
(A) Furnace used for burning solid waste.
(B) Furnace used for treating liquid waste.
(C) Both (A) and (B)
(D) None of the above
 
102. What is Plankton?
(A) Large plants in water.
(B) Microscopic floating organisms Plants and animals.
(C) Bottom dwelling aquatic organisms
(D) None of the above
 
103. Biotic environment includes
(A) Consumers
(B) Decomposers
(C) Producers
(D) All of the above

WBCS Mock Test

 

108. An ecosystem consists of
(A) population.
(B) a biotic community.
(C) a population and its non-living elements.
(D) a biotic community and its non-living elements
 
109. Decomposers which specifically act on the fecal matter of other organisms are called
(A) Coprophagic
(B) Heterophagic
(C) Allophagic
(D) Paraphagic
 
110. Major cause of Ozone depletion is due to which chemical?
(A) Chloro Fluoro Carbons (CFC)
(B) Polyphenols
(C) Dioxins
(D) Rayon
 
145. Roof top water harvesting is highest in
(A) China
(B) Brazil
(C) Ghana
(D) India
 
153. The Biodiversity Act was passed in
(A) 2000
(B) 2002
(C) 2004
(D) 2008
 
154. Bengal Smoke Nuisance Act came up for the first time in
(A) 1900
(B) 1905
(C) 1950
(D) 1978
 
155. The green bench in Kolkata High Court was established in
(A) 1990
(B) 1996
(C) 1997
(D) 1998
 
156. The activated sludge treatment is carried out by
(A) high temperature
(B) acidification
(C) microbes
(D) moisture
 
157. The country where paper recycling was initiated in the world is
(A) UK
(B) USA(1874)
(C) Germany
(D) France
 
158. The electric arc furnace is used for recycling of
(A) Cu
(B) Zn
(C) Fe
(D) Cr
WBCS Mock Test

 
159. CITES became effective from the year
(Washington, D.C.)
(A) 1970
(B) 1975(1st July)
(C) 1980
(D) 1985
 
160. Mulching prevents the loss of
(A) microbes
(B) moisture
(C) mineral
(D) organic matter
 
162. The following waste comes under red category:
(A) metal
(B) drug
(C) oil waste
(D) food waste
 
163. The ideal temperature for composting is
(A) 300C – 400C
(B) 400C – 500C
(C) 500C – 600C
(D) 600C – 700C
 
164. The disinfection of drinking water by municipalities is mostly by
(A) Chlorination
(B) Bromination
(C) Boiling
(D) UV radiation
 
66. Indian Board of Wildlife was established in
(A) 1932
(B) 1952
(C) 1962
(D) 1972
 
167. Bhagabatpur project is for breeding
(A) Marsh Crocodile
(B) Tigers
(C) Black buck
(D) Dholes
 
168. Maximum energy consumption in Asia is by
(A) India
(B) China
(C) Japan
(D) Pakistan
 
178. X-ray films are a source of which of the following gas?
(A) SO2
(B) CO2
(C) NO2
(D) SO3
 
179. Below, which of the following pH in rain regarded as ‘acid rain’?
(A) 7
(B) 7.3
(C) 5.6
(D) 6

WBCS Mock Test

180. Which of the following pollutant is the major contributor to photochemical smog?
(A) Peroxynitrates
(B) Hydro peroxides
(C) Nitrogen dioxide
(D) Ozone
 
184. What is the primary standard level for carbon monoxide for assuring air quality?
(A) 10 ppm
(B) 90 ppm
(C) 1 ppm
(D) 9 ppm
 
185. Which is the most abundant hydrocarbon in the atmosphere?
(A) Methane
(B) Carbonyl sulphide
(C) Ethane
(D) None of the above
 
198. Which is the most abundant greenhouse gas
in the atmosphere?
(A) Carbon dioxide
(B) Water vapour
(C) Methane
(D) Nitrogen
 
176. Which of the following is the largest sink for carbon dioxide gas?
(A) Forests
(B) Oceans
(C) Ice sheets
(D) Grasslands
 
 
 

WBCS Main Question Paper – 2018

51. BOD value will be maximum in
a) waste water
b) river water
c) rain water
d) sewage water
 
52. During Bhopal gas tragedy, the harmful gas evolved was
a) Phosgene
b) Ammonia
c) Carbyl amine
d) Methyl isocyanate
 
54. Which ray strikes the earth due to depletion of O3 layer?
a) Infrared
b) Microwave
c) Visible
d) Ultraviolet
 
55. Which one of the following is responsible for depletion of O3 layer ?
a) CO2
b) Chlorofluoro Carbon
c) CH4
d) None of the above
 
56. Which one of the following gases reacts with hemoglobin and produces toxic effect?
a) CO2
b) SO2
c) NO2
d) CO
 
59. Mention the main constituent of biogas and natural gas.
a) Ethane
b) Methane
c) Propane
d) Butane
 
60. Which one of the following statements is false?
a) River pollution is due to industrial and domestic sewage discharge
b) Surface water contains a lot of organic matters and nutrients
c) Oil slick in sea increases dissolved oxygen content
d) Oil spill in sea causes heavy damage to fishery
 
61. Which one is the major element of the following present in Earth’s Crust?
a) Si
b) Al
c) Ca
d) Na
 
62. The aim of rain water harvesting is to
a) recharge groundwater
b) avoid floods
c) control soil erosion
d) conservation of freshwater
 
63. In which ecosystem, grassland is included?
a) Marine
b) Freshwater
c) Terrestrial
d) Artificial

WBCS Mock Test

64. _____ assists in environmental protection.
a) Urbanization
b) Nuclear explosion
c) Industrialisation
d) Plantation and Forestation
 
66. The largest reservoir of nitrogen gas in environment is
a) Air
b) Earth’s Crust
c) Ocean
d) Plants and animals
 
67. Soil is rarely contaminated due to
a) Acid rain
b) Chemical fertilizers
c) Pesticides
d) Mineralization
 
68. Which part of atmosphere is richest in O3 gas?
a) Stratosphere
b) Ionosphere
c) Exosphere
d) Magnetosphere
 
69. Hydrosphere does not cover
a) Oceans
b) Rivers
c) Glaciers
d) Rocks
 
70. Which one of the following is not included within the atmosphere?
a) Troposphere
b) Stratosphere
c) Lithosphere
d) Ozonosphere
 
80. The efficient utilisation of fly ash does not recommend for making
a) Portland fly ash cement
b) fly ash based building bricks
c) synthetic stone chips
d) fillers in concrete
 
81. By which chemical reaction, biodiesel is being prepared?
a) Fermentation
b) Combustion
c) Polymerisation
d) Trans esterification
 
88. Which of the following is a biodegradable pollutant?
a) Dye effluent
b) Bleaching effluent
c) Sewage
d) Heavy metals
 
95. The first step of sewage treatment:
a) Precipitation
b) Chlorination
c) Airation
d) Sedimentation
WBCS Mock Test

 
97. The photochemical smog is generated by
a) HCHO
b) PAN (Peroxy acetyl nitrate)
c) Acrolin
d) Moisture
 
182. Immediate remedial measure to tackle non-degradable plastic waste pollution is
(A) Bio-diesel production     
(B) as Bitumen filler    
(C) C-black production      
(D) Recycling
 
184. Radioactive wastes should be entrapped in leak-proof _______ containers before dumping into sea.
(A) concrete      
(B) glass      
(C) plastic      
(D) steel
 
185. Detrimental solid waste liberated by thermal power station is
(A) Red mud      
(B) Fly ash
(C) Granulated Slag     
(D) Carbon black
 
187. The bed of catalyst used for conversion automobile emissions to CO2 is made of
(A) Pt
(B) MnO2     
(C) MoO     
(D) V2O2
 
188. Instrument used in industry for purifying air contaminated with dust and smoke:
(A) Scrubber      
(B) Blower      
(C) Extractor      
(D) Electrostatic precipitator
 
189. CO level in burnt flue gas up to 150 ppm can be monitored by means of
(A) Non-dispersive IR spectroscopy
(B) UV-Vis spectroscopy
(C) Atomic absorption spectroscopy analysis
(D) Flame photometry
 
190. Permissible limit of Arsenic in drinking water:
(A) 5 ppm
(B) 7.5 ppm      
(C) 10 ppm      
(D) 12.5 ppm
 
191. The most effective sewage treatment is conducted by
(A) Cation-anion exchange method
(B) Activated sludge method
(C) Incineration technique
(D) None of the above
 
183. Monitoring of SO2 gas is done by passing through
(A) [HgCl4]-2 solution
(B) K- pyrogallate solution
(C) Fehlings’ solution
(D) Ammoniacal Cuprous Chloride solution

WBCS Mock Test

186. Desalination of water is performed by
(A) Lime-soda method      
(B) Permutit method     
(C) Ion-exchange method       
(D) Reverse Osmosis
 
193. Acidity of normal rain water is due to
(A) CO       
(B) NO       
(C) CO2
(D) H2S
 
196. Historical monuments and temples are badly damaged due to corrosive action of
(A) SO2
(B) CO2
(C) NH3
(D) C2H2
 
197. The best method for sterilisation of water uses
(A) Autoclaving      
(B) Ozone      
(C) Chlorine water       
(D) UV rays
 
199. Smoke is a colloidal suspension of
(A) negatively charged carbon particles in air.
(B) positively charged carbo-cation particles in air
(C) inert particles of carbon black in air.
(D) None of the above
 
200. Which one of the following is not metallic pollutant ?
(A) Hg      
(B) Pb      
(C) Cr       
(D) Detergent
 
 

WBCS Main Question Paper – 2017

57. 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
 
128. Most hazardous metal pollutant of automobile battery is
(A) Mercury       
(B) Cadmium        
(C) Lead
(D) Copper
 
129. Domestic waste causes
(A) Air pollution      
(B) Effluents       
(C) Biodegradable pollution
(D) Non-biodegradable pollution
 
130. Major aerosol pollutant in jet plane emission is
(A) Sulphur dioxide      
(B) Carbon monoxide      
(C) Methane       
(D) Fluorocarbon
 
131. In ecosystem, which one shows one way passage ?
(A) Free energy
(B) Nitrogen       
(C) Carbon       
(D) Potassium
 
132. Main source of water and soil pollution is
(A) Agro industry      
(B) Thermal power plant      
(C) Industrial effluents        
(D) All of the above
 
147. Which one is responsible for white lung cancer ?
(Asbestosis)
(A) Asbestos
(B) Lead        
(C) Mercury      
(D) None of the above
 
148. Which is not a pollutant ?
(A) Mercury      
(B) Arsenic      
(C) Lead        
(D) Alumina
 
149. Mercury is emitted into air by
(A) burning coal
(B) burning garbage      
(C) steam boiler     
(D) diesel engine
 
161. The gases responsible for greenhouse effect are
(A) O2
(B) CO2
(C) N2
(D) SO2
 

WBCS Mock Test

 

WBCS Main Question Paper – 2016

110. The Silent Valley Movement had taken place in –
(A) Kerala
(B) Odisha       
(C) Jharkhand       
(D) Uttarakhand
 
127. CNG is the other name of –
(A) ethylene       
(B) ethane        
(C) methane
(D) acetylene
 
128. Fly ash contains –
(SiO2, Al2O3, CaO, Fe2O3)
(A) Si
(B) Al      
(C) Fe      
(D) All of these
 
139. Tarun Bharat Sangh was established for water conservation in –
(A) Gujarat       
(B) Maharashtra        
(C) Rajasthan     (1985)
(D) Madhya Pradesh
 
140. Zero waste management was first successfully implemented at –
(A) Vellore       
(B) Chennai        
(C) Bangaluru         
(D) Mysore
 
141. The country that produces highest amount of wind energy is –
(India – 4th)
(A) Netherland        
(B) Sweden         
(C) China
(D) Belgium
 
144. Kalundborg model is followed in-
(Denmark)
(A) solid waste management
(B) air pollution control
(C) zero waste management
(D) green technology
 
145. Average per capita municipal solid waste generated per day in India is upto –
(450g)
(A) 100g       
(B) 200g        
(C) 300g      
(D) 500g
 
146. The Abyssal Zone is at a depth of –
(2000-6000 m)
(A) 1000-2000 m      
(B) 2000-4000 m
(C) 4000-6000 m
(D) 6000-8000 m
 
148. 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 Mock Test

149. Bioplastic mostly is produced from –
(A) bacteria      
(B) algae       
(C) fungi       
(D) protozoa
 
150. Man and Biosphere program was undertaken in-
(A) 1971     (UNESCO
(B) 1973       
(C) 1975       
(D) 1980
 
151. Arabari Model is representing-
(West Midnapore, started in 1972)
(A) Social forestry       
(B) Joint forestry
(C) Sustainable forestry     
(D) Farm forestry
 
152. 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
 
153. Hydrogen from sea water was first introduced-
(A) Spain       
(B) Italy       
(C) Finland        
(D) Iceland
 
155. The following is not a biosphere reserve in India-
(A) Gulf of Mannar     
(B) Nanda Devi        
(C) Bhitarkonika
(D) Sundarbans
 
159. 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
 
160. The Mangrove forest of India constitute what per cent of the total mangrove forest of the world ?
(A) 5%        
(B) 7%       
(C) 10%       
(D) 3%
 
167. The direct and indirect water usage is called-
(A) water indicator      
(B) water usage      
(C) water balance       
(D) water footprint
 
168. The number of tsunamis are highest in-
(A) Atlantic Ocean       
(B) Pacific Ocean
(C) Indian Ocean      
(D) Bay of Bengal

WBCS Mock Test

171. The following compound is not a persistent organic pollutant-
(A) DDT       
(B) Dioxins       
(C) Endosulfan       
(D) Methane
 
172. The following country is curbon negative in nature-
(A) Nepal       
(B) India         
(C) Bhutan
(D) China
 
176. The first Eco city of the world was built in –
(A) USA       
(B) France       
(C) Brazil    (Curitiba)  
(D) UK
 
177. Basel convention is dated back to –
(A) 1978        
(B) 1982       
(C) 1985        
(D) 1989(Switzerland)
 
178. Energy Conservation Act was introduced in India since –
(A) 2000        
(B) 2001
(C) 2003       
(D) 2005
 
179. Anti-dumping of liquid waste was taken up in –
(A) London        
(B) Basel       
(C) Geneva       
(D) Bern
 
183. The conversion of mercury to methyl mercury is brought about by-
(A) cyanobacteria        
(B) Eubacteria
(C) fungi       
(D) algae
 
187. Water blooms are mostly caused by-
(A) cyanobacteria        
(B) diatoms       
(C) dinoflagellatas        
(D) green algae
 
188. The largest oil spill so far was recorded from-
(A) Alaska         
(B) Gulf of Mexico     (2010)  
(C) Persian Gulf       
(D) Arabian Sea
 
190. A severe cyclone in Richter scale has a value of-
(A) 4 – 4.9      
(B) 5 – 5.9       
(C) 6 – 6.9        
(D) 7 – 7.9
 
191. 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
 
197. 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 Main Question Paper – 2015

1.  The following term is not involved in air pollution.
(A) SMOG       
(B) MMD        
(C) DO    
(D) VC
 
2.  Mufflers are commonly used to prevent the
(silencer)
(A) Radiation pollution       
(B) Noise pollution  
(C) Air pollution      
(D) Thermal pollution
 
3.  Physiological disorder may occur when the noise level reaches
(A) 110 db  
(B) 120 db       
(C) 135 db      
(D) 145 db
 
4.  PAN formation does not include
(A) Nitrogen       
(B) Ozone        
(C) Hydrogen  
(D) Hydrocarbon
 
7.  The global warming potential of CO2 is
(A) 1
(B) 2      
(C) 3      
(D) 4
 
8.  Zoo conservation data is kept by
(A) ICBN         
(B) ICZN    
(C) WZCS      
(D) ICTV
 
9.  Marsh crocodile conservation in Sundarbans is located in
(A) Sajnekhali       
(B) Sudhanyakhali       
(C) Kalash Island        
(D) Bhagabatpur
 
10.  Tiger conservation project in India was introduced from
(Jim Corbett National Park of Uttarakhand)
(A) 1953       
(B) 1963        
(C) 1973    (1st April)   
(D) 1983
 
6. Which one of the following reflects back more sunlight as compared to other three?
(A) Sand desert
(B) Paddy crop land
(C) Land covered with snow
(D) Prairie grassland
 
8. The release of which of the following into ponds and wells helps in controlling the mosquitos?
(A) Crab
(B) Dogtish
(C) Gambusia Fish
(D) Snail

WBCS Mock Test

 

27. Acid rain can be caused by the pollution of environment by
(A) Carbon dioxide and Nitrogen
(B) Carbon monoxide and carbon dioxide
(C) Ozone and Carbon dioxide
(D) Nitrous oxide and Sulphur dioxide
 
33. ‘Green accounting’ indicates
(A) Level of environment pollution
(B) Counting of environment bodies
(C) Level of greenery in the world
(D) None of the above
 
34. Maximum solar energy is used in India in
(A) Gujarat
(B) Rajasthan
(C) Karnataka(in 2019)
(D) Tamil Nadu
 
35. Cigarette smoking is harmful for health due to the emission of
(A) Carbon dioxide
(B) Carbon monoxide
(C) Potassium permanganate
(D) Sulphur dioxide
 
36. Which country will help India to set up Jayitapur Nuclear Power station ?
(Ratnagiri district, Maharashtra)
(A) Russia
(B) France
(C) Germany
(D) Canada
 
37. ‘Kyote Protocol’ signed in 1977 was related to
(A) Reduction of Greenhouse gas
(B) Pulse Polio Immunisation Programme
(C) World’s Youth Policy
(D) Nuclear disarmament treaty
 
38. Which one of the following is a greenhouse gas?
(A) SO2
(B) CO2
(C) CFC
(D) All of the above
 
61. The oldest animal conserved in India is
(A) Tiger
(B) Lion
(C) Elephant
(D) Black bear
 
62. Flowing water ecosystem is also called
(A) Pelagic
(B) Estuarine
(C) Lotic
(D) Lentic
 
69. The following compound does not react with Ozone layer
(A) CFC
(B) HFC
(C) CA(OCl)Cl
(D) CCl
WBCS Mock Test

 
76. The protected bird of India is
(A) Monal
(B) Dove
(C) Great Indian Bustard
(D) Crane
 
126. The acidification of oceans is increasing. Why is this phenomenon cause of concern?
i) The growth and survival of coral reefs will be adversely affected
ii) The survival of some animals that have phytoplankton larvae will be adversely affected.
iii) The cloud seeding and formation of clouds will be adversely affected
Which of the statement(s) given above is / or correct?
(A) 1 and 2
(B) Only 2
(C) 1 and 3
(D) All of these
 
131. “Green Party” was initiated in
(A) Germany
(B) Canada
(C) France
(D) USA(1984)
 
132. Agenda 21 was formulated in
(A) Stockholm Summit
(B) Nairobi
(C) Rio Summit(1992)
(D) Johannesburg Summit
 
133. Global Environmental facility was initiated by
(Oct, 1992)
(A) WHO
(B) UNDP
(C) UNEP
(D) WMO
 
134. International Board of Plant Genetic Resources was an initiative of
(1974)
(A) IUCN
(B) FAO
(C) UNEP
(D) FAO and UNEP
 
135. Climate Action Network formed in 1989 included
(A) 20 Countries
(B) 22 Countries
(C) 28 countries
(D) 32 Countries
 
136. The best way to get rid of biomedical waste is
(A) Incineration
(B) Autoclaving
(C) Chemical treatment
(D) landfill
 
137. The first environmental protection act in Independent India was
(A) Air pollution Act
(B) Water Pollution Act(22nd Sept)
(C) Environmental Protection Act
(D) Hazardous Waste Act
 
138. Compressed Natural Gas is the other name of
(A) Ammonia
(B) Methane
(C) Hydrogen sulphide
(D) Carbon dioxide

WBCS Mock Test

142. The number of biodiversity hot spots in India is / are
(A) One
(B) Two
(C) Three
(D) Four
 
143. Land fill gas is the other name of
(CH4 + CO2)
(A) CO2
(B) CO
(C) H2
(D) CH4
 
144. The convention for biodiversity is dated back to
(A) 1973
(B) 1983
(C) 1993(29 Dec)
(D) 2003
 
145. The super oil bag is actually
(A) A fungus
(B) An algae
(C) A bacteria
(D) A transgenic bacteria
 
146. The following organism is an indicator for air pollution.
(A) Algae
(B) Fungi
(C) Lichen
(D) Bryophytes
 
147. The length of the coastal zone from the high tide line is
(A) 200 M
(B) 500 M
(C) 700 M
(D) 1000 M
 
148. Biomedical waste disposal Act is dated back to
(A) 1992
(B) 1998(July)
(C) 2000
(D) 2002
 
149. The original article which talks about protection of environment in Indian constitution is
(A) 38 A
(B) 48 A
(C) 51 A
(D) 61 A
 
150. Gm counter is used to measure the following pollution
(Geiger-Muller tube)
(A) Noise
(B) Water
(C) Radioactive
(D) Air
 
153. Gravity settling chambers are used in industries to remove ________
(A) SOX
(B) NOX
(C) Suspended particles
(D) Glass particles
 
 
 

WBCS Main Question Paper – 2014

29.  One tree which yields biodiesel is
(A) jatropha
(B) teak      
(C) rubber     
(D) sal
 
31.  Greenhouse gases emit and absorb radiation within the
(A) microwave region       
(B) infrared region
(C) visible region     
(D) ultra violet region
 
33.  The gas used in refrigerators that destroys the ozone layer is
(A) ammonia        
(B) chlorofluorocarbon
(C) nitrous oxide    
(D) methane
 
40.  The book ‘Silent Spring’ written by Rachel Carson described the detrimental effects of
(1962)
(A) chemical fertilizers     
(B) deforestation       
(C) chemical pesticides
(D) greenhouse gases
 
41.  Which line demarcates the coastal area of Bay of West Bengal ?
(A) High Tide Line      
(B) Dampier & Hodge’s line      
(C) Line of Gangetic Delta
(D) Low Tide Line
 
42.  Name the turtle which rests within West Bengal sea coasts
(A) Batagurbusca
(B) Indian Soft Shelled Gangetic Turtle
(C) Indian Flap Shelled Turtle
(D) Olive Ridley
 
43.  For which mangrove species maximum sweet water influx is required ? 
(A) Keora         
(B) Sundari
(C) Kantra       
(D) Goran
 
44.  Black panther is a
(A) Panther       
(B) Jaguar       
(C) Tiger        
(D) Leopard
 
45.  Which of the following Tiger Reserves is called Kingfishers’ Paradise ?
(A) Buxa        
(B) Corbett         
(C) Sundarban
(D) Kaziranga
 
47.  Depletion of ozone layer increases the incidence of
(A) Blood cancer        
(B) Lung cancer         
(C) Skin cancer
(D) Brain cancer

WBCS Mock Test

 

48.  How many biodiversity rich centres are there in India ?
(A) 1       
(B) 4
(C) 12      
(D) More than 12
 
49.  Hot spots are areas with
(A) Low diversity       
(B) High diversity        
(C) Genetic diversity       
(D) Ecological diversity 
 
50.  An estuary is a
(A) Body of water
(B) coastal body of water
(C) semiclosed coastal body of water   
(D) water body of lake
 
51.  Which gas caused industrial disaster in Bhopal in December, 1984
(A) Oleum         
(B) Fuel         
(G) MIC    (methyl isocyanate)   
(D) Methylamine
 
53.  The depth of water of Wet Land does not exceed
(A) 6 meters
(B) 10 meters        
(C) 6 feet        
(D) 10 feet
 
54.  To control the Global warming we should control the use of
(A) fossil fuel
(B) Renewable energy       
(C) Solar energy      
(D) atomic energy
 
55.  Blackfoot disease is caused by which pollutant ?
(A) Mercury         
(B) Arsenic
(C) Copper         
(D) Iron
 
56.  Which movement is related with Forest protection ?
(A) Chipko movement
(b) Narmada Banchao movement
(c) Narmada Dam movement
(d) Green Bench
 
57.  Which bird is highly threatened by PCBs ?
(Polychlorinated Biphenyls)
(A) Sparrow 
(B)  Dove       
(C) Ostrich      
(D) Penguin
 
58.  Minamata disease is caused by which metal contamination ?
(A) Zinc      
(B) Lead       
(C) Copper       
(D) Mercury
 
59.  Contamination of which metal with soil makes it hard for trees to take up water ?
(A) Aluminium       
(B) Magnesium         
(C) Copper       
(D) Zinc
 
82.  Ramsar convention (1971) is related to protection of
(A) national monuments        
(B) wetlands
(C) national parks and forests       
(D) coral reefs
 
 

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