Q. No.Global agreement in specific control strategies to reduce the release of ozone-depleting substance was adopted by:
1. Rio de Janeiro Conference
2. The Montreal Protocol
3. The Kyoto Protocol
4. The Vienna Convention
1. 2.5 or less
2. 1.5 or less
3. 1.0 or less
4. 5.2 or 2.5
Which one of the following statements is correct?
| 1. | Extensive use of chemical fertilizers may lead to eutrophication of nearby water bodies |
| 2. | Both Azotobacter and Rhizobium in root nodules of plants |
| 3. | Cyanobacteria such as Anabaena and Nostoc are important mobilizers of phosphates and potassium for plant nutrition in the soil |
| 4. | At present it is not possible to grow maize without chemical fertilizers |
1. CFCs 14%, CH4 20%
2. CO2 40%, CFCs 30%
3. N2O 6%, CO2 86%
4. CH4 20%, N2O 18%
Montreal protocol which calls for appropriate action to protect the ozone layer from human activities was passed in the year:
1. 1986
2. 1987
3. 1988
3. 1985
Which of the following methods is the most suitable for the disposal of nuclear waste?
| 1. | Bury the waste within rocks, deep below the earth's surface |
| 2. | Shoot the waste into the space |
| 3. | Bury the waste under the Antarctic ice-cover |
| 4. | Dump the waste within rocks, under deep ocean |
Which of the following pairs of gases is mainly responsible for green house effect?
1. Carbon dioxide and methane
2. Ozone and Ammonia
3. Oxygen and Nitrogen
4. Nitrogen and Sulphur dioxide
Polyblend, a fine powder of recycled modified plastic, has proved to be a good material for:
1. making tubes and pipes
2. making plastic sacks
3. use as a fertilizer
4. construction of roads
Which of the following protocols did aim for reducing the emission of chlorofluorocarbons into the atmosphere?
1. Geneva protocol
2. Montreal protocol
3. Kyoto protocol
4. Gothenburg protocol
Biochemical Oxygen Demand (BOD) in river water:
| 1. | remains unchanged when algal bloom occurs |
| 2. | has no relationship with the concentration of oxygen in the water |
| 3. | gives a measure of Salmonella in the water |
| 4. | increases, when sewage gets mixed with river water |
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