Identify the incorrectly matched pair:

1.

Ozone depletion

DNA damage

2.

Greenhouse effect

Increased atmospheric carbon dioxide

3.

Acid rain

pH < 5

4.

Eutrophication

Decreased primary productivity

Subtopic:  Ozone Layer Depletion | Water Pollution |
 64%

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The radiatively active gas with the maximum percent increase in the atmosphere since 1750 AD is:

1. Carbon dioxide 2. Methane
3. Nitrous oxide 4. Chlorofluorocarbons
Subtopic:  Agrochemical & Radioactive Waste |

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Non-biodegradable pollutants are created by:
1. Nature
2. Excessive use of resources
3. Humans
4. Natural disasters

Subtopic:  Solid Waste Pollution |
 84%
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According to Central Pollution Control Board, the diameter of particles that are responsible for causing great harm to human health is:
1. 2.5 micrometer
2. 5.0 micrometer
3. 10.0 micrometer
4. 7.5 micrometer

Subtopic:  Air Pollution |
 95%
From NCERT

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The material generally used for soundproofing rooms like a recording studio or an auditorium is:

1. Cotton 2. Coir
3. Wood 4. Styrofoam
Subtopic:  Air Pollution |
 70%

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Compressed Natural Gas (CNG) is:

1.  Propane 2.  Methane
3.  Ethane 4.  Butane
Subtopic:  Air Pollution |
 61%

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The world’s most problematic aquatic weed is:

1.  Azolla                2.  Wolffia
3. Eichhornia 4. Trapa

Subtopic:  Water Pollution |
 95%
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Which of the following exhibits biomagnifications?

1. SO2           2. Mercury
3. DDT 4. Both 2 & 3
Subtopic:  Water Pollution |
 85%
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The expanded form of DDT is:
1. Dichloro diphenyl trichloroethane
2. Dichloro diethyl trichloroethane
3. Dichloro dipyridyl trichloroethane
4. Dichloro diphenyl tetrachloroacetate

Subtopic:  Water Pollution |
 80%

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Which of the following material takes the longest time for biodegradation?

1. Cotton 2. Paper
3. Bone 4. Jute

Subtopic:  Solid Waste Pollution |
 73%

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