According to CPCB, what particulate size is most harmful to humans:
1. more than 10 micrometers
2. between 5 to 10 micrometers
3. between 2.5 to 5 micrometers
4. less than 2.5 micrometers

Subtopic:  Air Pollution |
 85%
From NCERT
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The most effective device to remove particulate matter from polluted air is:
1. electrostatic precipitator
2. cyclonic separator
3. trajectory separator
4. scrubber

 

Subtopic:  Air Pollution |
 91%
From NCERT
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A catalytic converter :
1. reduces unburnt hydrocarbon in auto emissions
2. converts NOx to nitrogen
3. reduces lead in the exhaust
4. converts carbon dioxide to carbon monoxide

Subtopic:  Air Pollution |
From NCERT
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The group most profoundly affected by global warming normally is :-

1. Plants
2. Insects
3. Birds
4. Mammals

Subtopic:  Green House Effect & Global Warming |
 55%
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Which of the following radiatively active gases contributes the least to global warming?

1. CO2

2. CFC

3. N2O

4. CH4

Subtopic:  Green House Effect & Global Warming |
 76%
From NCERT
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What is the percentage of photosynthetic active radiation [PAR] in the incident solar radiation?
1. 100 %
2. 50%
3. 1-5%
4. 2-10%

 

Subtopic:  Energy Flow |
 59%
From NCERT
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Which of the following commits industrialized nations to reduce greenhouse gas emissions ?
1. Montreal protocol
2. Kyoto protocal 
3. UNECD earth summit
4. Alma Atta conference 

Subtopic:  Green House Effect & Global Warming |
 52%
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To safeguard our water resources, the Water (Prevention and Control of Pollution) Act, was passed in:

1. 1951
2. 1974
3. 1985
4. 1987

Subtopic:  Water Pollution: I | Water Pollution |
 81%
From NCERT
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Eventually, the only solution for the treatment of e-wastes, provided it is carried out in an environment friendly manner, is:
1. Incineration
2. Burying in landfill sites
3. Dumping in developing countries
4. Recycling

 

Subtopic:  Solid Waste Pollution |
 70%
From NCERT
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Match each item in Column I with one item in Column II and choose the correct answer from the code given below:

A. Air [Prevention and Control of Pollution] Act a. 1981
B. Water [Prevention and Control of Pollution] Act b. 1974
C. Environment [Protection] Act c. 1986
D. Montreal Protocol d. 1987


Codes:
             A.            B.                   C.              D.
1.          a              b                    c               d

2.          b              a                    d               c

3.          d              c                    b               a

4.          c              d                    a               b

Subtopic:  Air Pollution | Water Pollution: II | Water Pollution |
 81%
From NCERT
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