On This Page

This set of Biology Multiple Choice Questions & Answers (MCQs) focuses on Environmental Issues Set 5

Q1 | How can we control global warming?
  • By reducing the use of fossil fuel
  • Aforestation
  • By slowing down the growth of human population
  • All of these
Q2 | What is the present scenario of deforestation in India as compared to beginning of twentieth century?
  • Beginning of twentieth century 30%, now 19.4%
  • Beginning of twentieth century 30% ,now 18.4%
  • Beginning of twentieth century 33%, now 19.4%
  • Beginning of twentieth century 23%, now 16.4%
Q3 | What should be the forest cover recommended by National Forest policy (1988)?
  • 33% for the plains, 67%for the hills
  • 40% for the plains, 60%for the hills
  • 24% for the plains, 76%for the hills
  • 23% for the plains, 77%for the hills
Q4 | Ozone depletion in the stratosphere will cause .. AIMS1992
  • Increased incidence of skin cancer
  • Forest fire
  • Global warming
  • None of these
Q5 | Eutrophicatico causes decrease in .. AIMS1996
  • Dissolved oxygen
  • Dissolved salts
  • Dissolved hydrogen
  • All of these
Q6 | Green house effect is caused by… AFMC2002
  • Green plant
  • Infra red rays
  • Uv rays
  • X-rays
Q7 | Ozone hole refers to… AFMC2001
  • Reduction in thickness of ozone layer in troposphere
  • Reduction in thickness of ozone layer in stratosphere
  • Hole in ozone layer in stratosphere
  • Increased concentration of ozone
Q8 | Green house effect is due to..… AMU2001
  • Higher CO2 concentration
  • Absorption of infrared rays by gases & dust particles
  • Ratification of atmosphere
  • Both B & C
Q9 | As it travels along the food chain the concentration of DDT.. KCET2001
  • Increase
  • Stays constant
  • Decreases
  • Fluctuates randomly.
Q10 | Reason for ozone hole is KCET2001
  • Increased UV radiation
  • Green house effect
  • Global warming
  • Acid rain
Q11 | In the coming year skin related disorders might be more common due to …
  • Use of detergent
  • Water pollution
  • Depletion of ozone layer
  • Air pollution CBSE1997
Q12 | Which unit is used for measuring thickness of ozone layer? AIIMS2009
  • P
  • DU
  • RA.
Q13 | Match the items given in _ans_key_column I and II_ans_key_Column-1 Column-II_ans_key_(P) Catalytic converter (i) Cl_ans_key_(Q) Scrubber (ii) CO &Nitrogen oxide_ans_key_(R) Polyblend (iii) SO2_ans_key_(S) Freon (iv) Plastic
  • (p-ii), (q-iii), (r-iv), (s-i)
  • ( p-i), (q-ii) ,(r-iii), (s-iv)
  • (p-ii), (q-iii), (r-I), (s-iv)
  • (p-iv), (q-i),(r-ii) ,(s-iii)
Q14 | Match the items given in column I and II KeralaPMT2011_ans_key_Column-1 Column-II_ans_key_(P) Electrostatic precipitator (i) Removes gases like SO2_ans_key_(Q) Scrubber (ii) Removes impurities from exhaust of vehicles_ans_key_(R) Catalytic converter (iii) Removes particulate matter
  • (p-i) ,(q-ii),(r-iii)
  • (p-iii),(q-i),(r-ii)
  • (p-iii),(q-ii),(r-i )
  • (p-ii),(q-i),(r-iii)
Q15 | Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) CNG (i) Rhodium_ans_key_(Q) Ozone (ii) Db_ans_key_(R) Catalytic converter (iii) Du_ans_key_(S) Noise (iv) Non carcinogenic
  • ( p-i), (q-ii) ,(r-iii), (s-iv) )
  • (p-iv), (q-iii), (r-i), (s-ii)
  • (p-ii), (q-iii), (r-I), (s-iv)
  • (p-iv), (q-i),(r-ii) ,(s-iii)
Q16 | Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) Biodegradable waste (i) Bottles,cans,metals_ans_key_(Q) Nonbiodegradable waste (ii) Domestic waste,cow dung_ans_key_(R) Recyclable waste (iii) Mercury,DDT
  • (p-iii) (,q-ii),(r-i)
  • (p-ii),(q-i),(r-iii)
  • (p-ii),(q-iii),(r-i )
  • (p-i),(q-ii),(r-iii)
Q17 | Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) Global warming (i) Mercury,DDT_ans_key_(Q) Eutrophication (ii) Rise in sea level_ans_key_(R) Biological magnification (iii) CH4,CO2_ans_key_(S) Green house effect (iv) Algal bloom
  • (p-iv), (q-i),(r-ii) ,(s-iii)
  • ( p-i), (q-ii) ,(r-iii), (s-iv)
  • (p-ii), (q-iii), (r-I), (s-iv)
  • (p-ii), (q-iv), (r-i), (s-iii)
Q18 | Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) 1988 (i) Noise pollution added in Air act_ans_key_(Q) 1974 (ii) Concept of joint forest management_ans_key_(R) 1980 (iii) Chipako movement_ans_key_(S) 1987 (iv) Natoinal Forest policy
  • (p-iv), (q-iii), (r-i), (s-ii)
  • ( p-i), (q-ii) ,(r-iii), (s-iv)
  • (p-iv), (q-iii),(r-ii) ,(s-i)
  • (p-ii), (q-iv), (r-i), (s-iii)
Q19 | Match the items given in column I ,II and III_ans_key_Column-1 Column-II Column-III_ans_key_(P) Garhwal (i) Ramesh Dagar (a) Bishnoi Community_ans_key_(Q) Jodhpur (ii) Ahmad Khan (b) Chipako movement_ans_key_(R) Haryana (iii) Sunderlal Bahuguna (c) Polyblend_ans_key_(S) Bangalore (iv) Amruta Devi (d) Organic farming
  • (p-iii
  • , (q-iv-a), (r-i-d), (s-ii
  • (B) ( p-i-a), (q-ii -b) ,(r-iii-c), (s-iv
Q20 | Match the items given in column I and II_ans_key_Column-1 Column-II_ans_key_(P) Water accumulation in potted plant (i) Chemical fertilizers_ans_key_(Q) Aquatic weed (ii) Mercury,DDT_ans_key_(R) Eutrophication (iii) Eichhornia_ans_key_(S) Nonbiodegradable (iv) Water logging
  • (p-ii), (q-iv), (r-i), (s-iii)
  • ( p-i), (q-ii) ,(r-iii), (s-iv)
  • (p-iv), (q-iii),(r-ii) ,(s-i)
  • (p-iv), (q-iii), (r-i), (s-ii)
Q21 | For the given statement which option is correct? _ans_key_Statement:_ans_key_(X) Air pollution causes injury to all living organisms._ans_key_(Y) The harmful effect depends on the concentration of pollutants, duration .
  • Both X and Y are correct.Y gives correct explanation for X
  • Both X and Y are correct.Y does not give correct explanation for X
  • X is correct, Y is wrong
  • X is wrong and Y is correct
Q22 | . For the given statement which option is correct? _ans_key_Statement:_ans_key_(X) Polyblend is a fine powder of recycled modified plastic._ans_key_(Y) In Bangalore roads are made of mixture of Polyblend and bitumen which increases Strength of the road.
  • Both X and Y are correct.Y gives correct explanation for X
  • Both X and Y are correct.Y does not give correct explanation for X
  • X is correct, Y is wrong
  • X is wrong and Y is correct
Q23 | For the given statement which option is correct?_ans_key_Statement:_ans_key_(X) Due to green revolution production of crop is more._ans_key_(Y) Water logging and soil salinity is the outcome of green revolution.
  • Both X and Y are correct.Y gives correct explanation for X
  • Both X and Y are correct.Y does not give correct explanation for X
  • X is correct, Y is wrong
  • X is wrong and Y is correct
Q24 | For the given statement which option is correct?_ans_key_Statement:_ans_key_(X)Unleaded petrol should be used in automobiles with catalytic converter to reduce pollution._ans_key_(Y)Lead in the petrol inactivates Rhodium and palladium .
  • Both X and Y are correct.Y gives correct explanation for X
  • Both X and Y are correct.Y does not give correct explanation for X
  • X is correct, Y is wrong
  • X is wrong and Y is correct
Q25 | For the given statement which option is correct? Statement:_ans_key_(X)DDT and plastic both are nonbiodegradable Waste_ans_key_(Y) As the time passes, Pollutants of domestic sewage does not remain pollutants.
  • Both X and Y are correct.Y gives correct explanation for X
  • Both X and Y are correct.Y does not give correct explanation for X
  • X is correct, Y is wrong
  • X is wrong and Y is correct