Natural ageing of a lake by biological enrichment of its water is known as:
1. Eutrophication
2. Biomagnification
3. Bioremediation
4. Biofortification

Concept Questions :-

Water Pollution: I
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High concentrations of accumulated DDT in birds
1. kills pathogens in their blood
2. causes sterility by affecting gametogenesis
3. leads to premature breaking of eggs
4. causes spasticity of the muscles ofthe body

Concept Questions :-

Water Pollution: I
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What was added in 1987 as a pollutant to The Air (Prevention and Control of Pollution) Act, [originally passed in 1981] :
1. radioactive wastes
2. CFCs
3. ground level ozone
4. noise

 

Concept Questions :-

Air Pollution
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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

Concept Questions :-

Air Pollution
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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

 

Concept Questions :-

Air Pollution
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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

Concept Questions :-

Air Pollution
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The group most profoundly affected by global warming normally is :-

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

Concept Questions :-

Green House Effect & Global Warming
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The concentration of ozone in stratosphere is normally lowest during the period:-

1. February - April

2. May - July

3. July - October

4. November - January

Concept Questions :-

Ozone Layer Depletion
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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

Concept Questions :-

Green House Effect & Global Warming
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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 

Concept Questions :-

Green House Effect & Global Warming
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