The two gases making the highest relative contribution to the greenhouse gases are:
1. CH4 and N2O
2. CFCs and N2O
3. CO2 and N2O 
4. CO2 and CH4

Subtopic:  Green House Effect & Global Warming |
 84%
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dB is a standard abbreviation used for the quantitative expression of
1. A particular pollutant
2. The dominant Bacillus in a culture
3. Certain pesticides
4. The density of bacteria in a medium

Subtopic:  Air Pollution |
 84%
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Eutrophication is often seen in
1. Deserts
2. Fresh water lakes
3. Ocean
4. Mountains

Subtopic:  Water Pollution |
 88%

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Which one of the following expanded forms of the following acronyms is correct
1. IPCC= International Panel for Climate Change
2. UNEP = United Nations Environmental Policy
3. EPA = Environmental Pollution Agency
4. IUCN = International Union for Conservation of Nature and Natural Resources

Subtopic:  Introduction to Pollution & Types |
 86%

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Which one of following pairs of gases are the major cause of "Greenhouse effect"
1. CO2 and O3
2. CO2 and CO
3. CFCs and SO2
4. CO2 and N2O

Subtopic:  Green House Effect & Global Warming |
 76%
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"Good ozone" is found in the:
1. Mesosphere
2. Troposphere
3. Stratosphere
4. Ionosphere

Subtopic:  Ozone Layer Depletion |
 88%
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Which one of the following is a wrong statement?
1. Most of the forests have been lost in tropical areas.
2. Ozone in upper part of atmosphere is harmful to animals.
3. Greenhouse effect is a natural phenomenon.
4. Eutrophication is a natural phenomenon in freshwater bodies.

Subtopic:  Ozone Layer Depletion |
 77%
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Measuring Biochemical Oxygen Demand (BOD) is a method used for:
1. estimating the amount of organic matter in sewage water.
2. working out the efficiency of oil driven automobile engines.
3. measuring the activity of Saccharomyces cerevisae in producing curd on a commercial scale.
4. working out the efficiency of RBCs about their capacity to carry oxygen.

Subtopic:  Water Pollution |
 94%
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The Air Prevention and Control of Pollution Act came into force in:
1. 1981
2. 1985
3. 1990
4. 1975

Subtopic:  Air Pollution |
 82%
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Kyoto Protocol was endorsed at :
1. CoP– 5
2. CoP - 6
3. CoP - 4
4. CoP– 3

Subtopic:  Green House Effect & Global Warming |
 55%

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