Which is correct
1. Both Azotobacter and Rhizobium fix atmospheric nitrogen in root nodules of plants
2. Cyanobacteria, Anabaena and Nostoc are mobilizers of phosphates and plant nutrition in soil
3. At present it is not possible to grow maize without chemical fertilizers
4. excessive use of chemical fertilizers may lead to eutrophication of nearby water bodies

Subtopic:  Water Pollution |
 71%
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Which is not a bio indicator of water pollution
1. Blood worms
2. Stone flies
3. Sewage fungus
4. Sludge worms.

Subtopic:  Water Pollution |
 51%

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Which one of the following is correct percentage of the two (out of the total of 4) green house gases tocontribute to the total global warming.
1. N2O 6%, CO2 86 %
2. Methane 20% , N2O 18%
3. CO2 40%, CFC 30%
4. CFCs 14%, methane 20%

Subtopic:  Green House Effect & Global Warming |
 78%
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According to Central Pollution Control Board (CPCB), Which particulate size in diameter (in
micrometres) of the air pollutants is responsible for greatest harm to human health
1. 1•0 or less
2. 5•2-2•5
3. 2•5 or less
4. 1•5 or less

Subtopic:  Air Pollution |
 87%
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Montreal Protocol aims at
1. Control of CO2 emission
2. Reduction of ozone depleting substances
3. Biodiversity conservation
4. Control of water pollution

Subtopic:  Ozone Layer Depletion |
 92%
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Chipko movement was launched for the protection of
1. Wet Lands
2. Grasslands
3. Forests
4. Livestock

Subtopic:  Green House Effect & Global Warming |
 94%
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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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