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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Global warming can be controlled by:

1.  Reducing reforestation, increasing the use of fossil fuel.
2.  Increasing deforestation, slowing down the growth of the human population
3.  Increasing deforestation, reducing the efficiency of energy usage.
4.  Reducing deforestation, cutting down the use of fossil fuel
Subtopic:  Green House Effect & Global Warming |
 90%
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A scrubber in the exhaust of a chemical industrial plant removes:
1. Gases like sulphur dioxide
2. Particulate matter of the size 5 micrometer or above
3. Gases like ozone and methane
4. Particulate matter of the size 2.5 micrometer or less

Subtopic:  Air Pollution |
 77%
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The zone of atmosphere in which the ozone layer is found
1. Ionosphere
2. Mesosphere
3. Stratosphere
4. Troposphere

Subtopic:  Ozone Layer Depletion |
 89%
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A location with luxuriant growth of lichens on the trees indicates that the:

1. Trees are very healthy 2. Trees are heavily infested
3. Location is highly polluted 4. Location is not polluted
Subtopic:  Lichens |
 86%
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Which of the following is not one of the prime health risks associated with greater UV radiation through the atmosphere due to depletion of stratospheric ozone?
1. Reduced Immune System
2. Damage to eyes
3. Increased liver cancer
4. Increased skin cancer

Subtopic:  Ozone Layer Depletion |
 61%

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High value of BOD (Biochemical Oxygen Demand) indicates that:
1. water is highly polluted
2. water is less polluted
3. consumption of organic matter in the water is higher by the microbes
4. water is pure

Subtopic:  Microbes in Sewage Treatment |
 76%
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