Most hazardous metal pollutant of automobile exhaust is

(1) Hg

(2) Cd

(3) Pb

(4) Cu

Subtopic:  Air Pollution - Global Warming |
 73%
From NCERT
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SO2 pollution is indicated by

1. Grasses

2. Mosses

3. Lichens

4. Fossils

Subtopic:  Air Pollution - Smog |
 88%
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B.O.D is connected with

(1) Organic matter

(2) Microbes

(3) Both

(4) None

Subtopic:  Water Pollution - Biological Oxygen Demand |
 76%
From NCERT
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Acid rain is due to an increase in the atmospheric concentration of : 

1. Ozone, and dust

2. CO2, and CO

3. SO3, and CO

SO2, and NO2

Subtopic:  Air Pollution - Acid Rain |
 93%
From NCERT
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Soil erosion is greater when

(1) No rain occurs

(2) Winds do not blow

(3) The rainfall is evenly distributed

(4) The Rainfall is received in heavy down pour

Subtopic:  Soil Pollution & Waste Management |
 84%
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Soil erosion can be prevented by : 

1. Overgrazing

2. Removal of vegetation

3. Afforestation (Plantation)

4. Increasing bird population

Subtopic:  Soil Pollution & Waste Management |
 93%
From NCERT
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Soil conservation is the process where

1. Soil is aerated

2. Soil erosion is allowed

3. Soil is protected against loss

4. Sterile soil is converted into fertile soil

Subtopic:  Soil Pollution & Waste Management |
 74%
From NCERT
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... is not a greenhouse gas :-
1. Hydrogen
2. Carbon dioxide
3. Methane
4. Nitrous oxide or N2O

Subtopic:  Air Pollution - Greenhouse Effect |
 89%
From NCERT
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The concentration of Peroxy Acetyl Nitrate (PAN) maximum in:-

(1) Fog

(2) Smoke

(3) Smog

(4) Photochemical smog

Subtopic:  Air Pollution - Smog |
 84%
From NCERT
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The ozone layer of the upper atmosphere is being destroyed by : 

1. Sulphur dioxide

2. Carbon dioxide

3. Chlorofluorocarbon

4. Smog

Subtopic:  Air Pollution - Greenhouse Effect |
 93%
From NCERT
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NEET 2021 - Achiever Batch - Aryan Raj Singh
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NEET 2021 - Achiever Batch - Aryan Raj Singh