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Chapter:

150+ Environmental Issues Solved MCQs

in Biology

These multiple-choice questions (MCQs) are designed to enhance your knowledge and understanding in the following areas: All India Pre Medical Test (AIPMT) .

Chapters

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Chapter: Environmental Issues
101.

The stress reaction is caused by

A. Air pollution
B. Nuclear pollution
C. Water pollution
D. Noise pollution
Answer» D. Noise pollution
discuss
102.

Deforestation may reduce the chances of…. (CBSE1990)

A. Rain fall
B. Frequent cyclones
C. Erosion of surface soil
D. Frequent landslide
Answer» A. Rain fall
discuss
103.

Most severe environmental hazard to mankind is due to…. (DPMT1986)

A. Air pollution
B. Radioactive pollution
C. Water pollution
D. Noise pollution
Answer» B. Radioactive pollution
discuss
104.

Which is biodegradable pollutant?

A. Mercury salt
B. Polythene bags
C. Domestic sewage
D. Aluminum canes
Answer» C. Domestic sewage
discuss
105.

According to government of India’s new policy what should be the level of aromatic hydrocarbons of the concerned fuel?

A. 40%
B. 30%
C. 42%
D. 35%
Answer» C. 42%
discuss
106.

What would have been the temperature of the earth without green house effect?

A. -15° C
B. -28° C
C. -18°C
D. -10°C
Answer» C. -18°C
discuss
107.

Which is the native place of Bishnoi community?

A. Bikaner
B. Jodhpur
C. Jamshedpur
D. Jaipur
Answer» B. Jodhpur
discuss
108.

Formation of ozone hole is maximum over. .CBSE1997

A. Antarctica
B. Europe
C. Africa
D. India
Answer» A. Antarctica
discuss
109.

The main problem arose due to green revolution is…

A. Over production of food
B. Water logging
C. Soil salinity
D. Both B and C
Answer» D. Both B and C
discuss
110.

What is importance of catalytic converter?

A. They increases average of the vehicles
B. They reduces emission of harmful gases
C. They convert CO and nitric oxide into CO2 and H2O
D. Both B and C
Answer» B. They reduces emission of harmful gases
discuss
111.

With the help of ____ SO2 is removed from the industrial exhaust?

A. Electrostatic precipitator
B. Solvents
C. Scrubber
D. None of these
Answer» C. Scrubber
discuss
112.

How much forest area is lost in tropics and temperate regions respectively?

A. 40%, 1%
B. 1%, 40%
C. 33%,40%
D. 40$,33%
Answer» A. 40%, 1%
discuss
113.

What is the rise in the temperature of earth since last three decades?

A. 0.6° C
B. 0.5°
C. 6°C
D. 5°C
Answer» A. 0.6° C
discuss
114.

How can we control global warming?

A. By reducing the use of fossil fuel
B. Aforestation
C. By slowing down the growth of human population
D. All of these
Answer» D. All of these
discuss
115.

What is the present scenario of deforestation in India as compared to beginning of twentieth century?

A. Beginning of twentieth century 30%, now 19.4%
B. Beginning of twentieth century 30% ,now 18.4%
C. Beginning of twentieth century 33%, now 19.4%
D. Beginning of twentieth century 23%, now 16.4%
Answer» A. Beginning of twentieth century 30%, now 19.4%
discuss
116.

What should be the forest cover recommended by National Forest policy (1988)?

A. 33% for the plains, 67%for the hills
B. 40% for the plains, 60%for the hills
C. 24% for the plains, 76%for the hills
D. 23% for the plains, 77%for the hills
Answer» A. 33% for the plains, 67%for the hills
discuss
117.

Ozone depletion in the stratosphere will cause .. AIMS1992

A. Increased incidence of skin cancer
B. Forest fire
C. Global warming
D. None of these
Answer» A. Increased incidence of skin cancer
discuss
118.

Eutrophicatico causes decrease in .. AIMS1996

A. Dissolved oxygen
B. Dissolved salts
C. Dissolved hydrogen
D. All of these
Answer» A. Dissolved oxygen
discuss
119.

Green house effect is caused by… AFMC2002

A. Green plant
B. Infra red rays
C. Uv rays
D. X-rays
Answer» B. Infra red rays
discuss
120.

Ozone hole refers to… AFMC2001

A. Reduction in thickness of ozone layer in troposphere
B. Reduction in thickness of ozone layer in stratosphere
C. Hole in ozone layer in stratosphere
D. Increased concentration of ozone
Answer» C. Hole in ozone layer in stratosphere
discuss
121.

Green house effect is due to..… AMU2001

A. Higher CO2 concentration
B. Absorption of infrared rays by gases & dust particles
C. Ratification of atmosphere
D. Both B & C
Answer» D. Both B & C
discuss
122.

As it travels along the food chain the concentration of DDT.. KCET2001

A. Increase
B. Stays constant
C. Decreases
D. Fluctuates randomly.
Answer» A. Increase
discuss
123.

Reason for ozone hole is KCET2001

A. Increased UV radiation
B. Green house effect
C. Global warming
D. Acid rain
Answer» A. Increased UV radiation
discuss
124.

In the coming year skin related disorders might be more common due to …

A. Use of detergent
B. Water pollution
C. Depletion of ozone layer
D. Air pollution CBSE1997
Answer» C. Depletion of ozone layer
discuss
125.

Which unit is used for measuring thickness of ozone layer? AIIMS2009

A. P
B. DU
D. RA.
Answer» B. DU
discuss
126.

Match the items given in
column I and II
Column-1 Column-II
(P) Catalytic converter (i) Cl
(Q) Scrubber (ii) CO &Nitrogen oxide
(R) Polyblend (iii) SO2
(S) Freon (iv) Plastic

A. (p-ii), (q-iii), (r-iv), (s-i)
B. ( p-i), (q-ii) ,(r-iii), (s-iv)
C. (p-ii), (q-iii), (r-I), (s-iv)
D. (p-iv), (q-i),(r-ii) ,(s-iii)
Answer» A. (p-ii), (q-iii), (r-iv), (s-i)
discuss
127.

Match the items given in column I and II KeralaPMT2011
Column-1 Column-II
(P) Electrostatic precipitator (i) Removes gases like SO2
(Q) Scrubber (ii) Removes impurities from exhaust of vehicles
(R) Catalytic converter (iii) Removes particulate matter

A. (p-i) ,(q-ii),(r-iii)
B. (p-iii),(q-i),(r-ii)
C. (p-iii),(q-ii),(r-i )
D. (p-ii),(q-i),(r-iii)
Answer» B. (p-iii),(q-i),(r-ii)
discuss
128.

Match the items given in column I and II
Column-1 Column-II
(P) CNG (i) Rhodium
(Q) Ozone (ii) Db
(R) Catalytic converter (iii) Du
(S) Noise (iv) Non carcinogenic

A. ( p-i), (q-ii) ,(r-iii), (s-iv) )
B. (p-iv), (q-iii), (r-i), (s-ii)
C. (p-ii), (q-iii), (r-I), (s-iv)
D. (p-iv), (q-i),(r-ii) ,(s-iii)
Answer» B. (p-iv), (q-iii), (r-i), (s-ii)
discuss
129.

Match the items given in column I and II
Column-1 Column-II
(P) Biodegradable waste (i) Bottles,cans,metals
(Q) Nonbiodegradable waste (ii) Domestic waste,cow dung
(R) Recyclable waste (iii) Mercury,DDT

A. (p-iii) (,q-ii),(r-i)
B. (p-ii),(q-i),(r-iii)
C. (p-ii),(q-iii),(r-i )
D. (p-i),(q-ii),(r-iii)
Answer» B. (p-ii),(q-i),(r-iii)
discuss
130.

Match the items given in column I and II
Column-1 Column-II
(P) Global warming (i) Mercury,DDT
(Q) Eutrophication (ii) Rise in sea level
(R) Biological magnification (iii) CH4,CO2
(S) Green house effect (iv) Algal bloom

A. (p-iv), (q-i),(r-ii) ,(s-iii)
B. ( p-i), (q-ii) ,(r-iii), (s-iv)
C. (p-ii), (q-iii), (r-I), (s-iv)
D. (p-ii), (q-iv), (r-i), (s-iii)
Answer» D. (p-ii), (q-iv), (r-i), (s-iii)
discuss
131.

Match the items given in column I and II
Column-1 Column-II
(P) 1988 (i) Noise pollution added in Air act
(Q) 1974 (ii) Concept of joint forest management
(R) 1980 (iii) Chipako movement
(S) 1987 (iv) Natoinal Forest policy

A. (p-iv), (q-iii), (r-i), (s-ii)
B. ( p-i), (q-ii) ,(r-iii), (s-iv)
C. (p-iv), (q-iii),(r-ii) ,(s-i)
D. (p-ii), (q-iv), (r-i), (s-iii)
Answer» C. (p-iv), (q-iii),(r-ii) ,(s-i)
discuss
132.

Match the items given in column I ,II and III
Column-1 Column-II Column-III
(P) Garhwal (i) Ramesh Dagar (a) Bishnoi Community
(Q) Jodhpur (ii) Ahmad Khan (b) Chipako movement
(R) Haryana (iii) Sunderlal Bahuguna (c) Polyblend
(S) Bangalore (iv) Amruta Devi (d) Organic farming

A. (p-iii-b), (q-iv-a), (r-i-d), (s-ii-c)
B. ( p-i-a), (q-ii -b) ,(r-iii-c), (s-iv-d)
C. ( p-i-a), (q-ii -b) ,(r-iii-c), (s-iv
D. (p-iii-b), (q-iv-a), (r-ii-c), (s-i-d)
E. (p-iv-b), (q-i-c),(r-ii-a) ,(s-iii-d)
Answer» A. (p-iii-b), (q-iv-a), (r-i-d), (s-ii-c)
discuss
133.

Match the items given in column I and II
Column-1 Column-II
(P) Water accumulation in potted plant (i) Chemical fertilizers
(Q) Aquatic weed (ii) Mercury,DDT
(R) Eutrophication (iii) Eichhornia
(S) Nonbiodegradable (iv) Water logging

A. (p-ii), (q-iv), (r-i), (s-iii)
B. ( p-i), (q-ii) ,(r-iii), (s-iv)
C. (p-iv), (q-iii),(r-ii) ,(s-i)
D. (p-iv), (q-iii), (r-i), (s-ii)
Answer» D. (p-iv), (q-iii), (r-i), (s-ii)
discuss
134.

For the given statement which option is correct?
Statement:
(X) Air pollution causes injury to all living organisms.
(Y) The harmful effect depends on the concentration of pollutants, duration .

A. Both X and Y are correct.Y gives correct explanation for X
B. Both X and Y are correct.Y does not give correct explanation for X
C. X is correct, Y is wrong
D. X is wrong and Y is correct
Answer» A. Both X and Y are correct.Y gives correct explanation for X
discuss
135.

For the given statement which option is correct?
Statement:
(X) Polyblend is a fine powder of recycled modified plastic.
(Y) In Bangalore roads are made of mixture of Polyblend and bitumen which increases Strength of the road.

A. Both X and Y are correct.Y gives correct explanation for X
B. Both X and Y are correct.Y does not give correct explanation for X
C. X is correct, Y is wrong
D. X is wrong and Y is correct
Answer» A. Both X and Y are correct.Y gives correct explanation for X
discuss
136.

For the given statement which option is correct?
Statement:
(X) Due to green revolution production of crop is more.
(Y) Water logging and soil salinity is the outcome of green revolution.

A. Both X and Y are correct.Y gives correct explanation for X
B. Both X and Y are correct.Y does not give correct explanation for X
C. X is correct, Y is wrong
D. X is wrong and Y is correct
Answer» A. Both X and Y are correct.Y gives correct explanation for X
discuss
137.

For the given statement which option is correct?
Statement:
(X)Unleaded petrol should be used in automobiles with catalytic converter to reduce pollution.
(Y)Lead in the petrol inactivates Rhodium and palladium .

A. Both X and Y are correct.Y gives correct explanation for X
B. Both X and Y are correct.Y does not give correct explanation for X
C. X is correct, Y is wrong
D. X is wrong and Y is correct
Answer» A. Both X and Y are correct.Y gives correct explanation for X
discuss
138.

For the given statement which option is correct? Statement:
(X)DDT and plastic both are nonbiodegradable Waste
(Y) As the time passes, Pollutants of domestic sewage does not remain pollutants.

A. Both X and Y are correct.Y gives correct explanation for X
B. Both X and Y are correct.Y does not give correct explanation for X
C. X is correct, Y is wrong
D. X is wrong and Y is correct
Answer» B. Both X and Y are correct.Y does not give correct explanation for X
discuss
139.

For the given statement which option is correct?
Statement
(X)Organic farming means agriculture with the help of chemicals.
(Y)500 members of Haryana Kissan welfare club have adopted this agricultural practice.

A. Both X and Y are correct.Y gives correct explanation for X
B. Both X and Y are correct.Y does not give correct explanation for X
C. X is correct, Y is wrong
D. X is wrong and Y is correct
Answer» D. X is wrong and Y is correct
discuss
140.

For the given statement which option is correct?
Statement
(X)Deforestation is one of the important factor for global warming.
(Y)Green house gas CO2 increases due to deforestation. .

A. Both X and Y are correct.Y gives correct explanation for X
B. Both X and Y are correct.Y does not give correct explanation for X
C. X is correct, Y is wrong
D. X is wrong and Y is correct
Answer» A. Both X and Y are correct.Y gives correct explanation for X
discuss
141.

How many molecules of ozone canbe decomposed by one atom of chlorine?

A. 100
B. 2.00.000
C. 1.00.000
D. 1000
Answer» C. 1.00.000
discuss
142.

Which gas is responsible for increase in atmosphere temperature?

A. O 2
B. CO2
C. SO2
D. CO
Answer» B. CO2
discuss
143.

Slash and burn agriculture means..

A. Agriculture on desert land
B. Jhum cultivation
C. Cultivation on hills
D. Reforestation.
Answer» B. Jhum cultivation
discuss
144.

Which of the following is responsible for protection of living organism on earth?

A. Ozone layer
B. Green house strategy
C. Troposphere
D. Uvrays
Answer» A. Ozone layer
discuss
145.

With respect to value of BOD, arrange the following in descending order.
i) Distilled water
ii) Tap water
iii)Industrial effluent
iv)Sewage discharge in the river

A. i– ii – iii - iv
B. iii –iv – ii - i
C. iv –iii – ii - i
D. ii – I – iv – iii
Answer» B. iii –iv – ii - i
discuss
146.

Domestic sewage with -------% impurities is unfit for human use.

A. 0.2%
B. 0.01%
C. 0.1%
D. 0.02%
Answer» C. 0.1%
discuss
147.

Green house Effect is the cumulative result of the influence of certain gases. Identify the gas which is not involved in the influence Karnataka2005

A. CO
B. CFC
C. N2
D. CH4
Answer» C. N2
discuss
148.

If fertilizers are added to fresh water .. AIIMS2002

A. Plants will die
B. Eutropication will occur
C. Fish population will decrease
D. Overall animal population will decrease
Answer» B. Eutropication will occur
discuss
149.

With the help of electrostatic precipitator which Air pollutant produced by cement factory is separated?

A. NO2
B. CO
C. SO2
D. SPM
Answer» D. SPM
discuss
150.

Which of the following does not occur when the sewage is discharged into the river?

A. Eutropication
B. Depletion of O2
C. Increase in O2
D. Algal bloom DPMT2003
Answer» A. Eutropication
discuss

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