Q. No.In stratosphere, which of the following elements acts as a catalyst in degradation of ozone and releaseof molecular oxygen?
1. Carbon
2. Oxygen
3. Fe
4. CI
1. Carbon
2. Oxygen
3. Fe
4. CI
Drinking mineral water with low levels ( ~ 0.02 ppm) of pesticide for long period would
1. Cause cancer of intestine
2. Pesticide accumulation in the body
3. Cause leukaemia
4. Produce immunity against mosquito
Nitrogen oxides formed during emission from automobiles and power plants are a source of fine airparticles which lead to
1. Dry acid deposition
2. Photochemical smog
3. Wet acid deposition
4. Industrial smog
Which one of the following statements pertaining to pollutant is correct?
1. DDT is nonbiodegradable pollutant
2. Excess fluoride in drinking water causes osteoporosis
3. Excess cadmium in drinking water may cause black foot disease
4. Methyl mercury in water may cause ‘’itaiitai’’ disease.
Formation of non functional methaemoglobin causes blue baby syndrome. This is due to
1. Excess of arsenic in drinking water
2. Excess of nitrate in drinking water
3. Deficiency of iron in food
4. Increased methane content in atmosphere
A lake with an inflow of domestic sewage rich in organic waste may result in:
| 1. | An increased production of fishes due to a lot of nutrients |
| 2. | Death of fishes due to lack of oxygen |
| 3. | Drying of the lake very soon due to algal bloom |
| 4. | Increased population of aquatic food web organisms |
Which award is given to individuals or communities from rural areas that have shown extraordinary courage and dedication in protecting wildlife?
1. Venu Menon Animal Allies Award
2. Amrita Devi Bishnoi Award
3. David Shepherd Wildlife Award
4. The Pledge Award
Which of the following is not a consequence of deforestation?
| 1. | An increase in atmospheric carbon dioxide as trees can hold a lot of carbon in their biomass. |
| 2. | Loss of biodiversity due to habitat destruction. |
| 3. | A wetter climate as trees can hold a lot of water. |
| 4. | Soil erosion due to loss of the protective layer of vegetation. |
Slash and burn agriculture leads to nutrient-depleted soils and deforestation if:
1. crash crops are implanted rather than cereals
2. it is practiced in a sufficiently larger area
3. some useful trees are retained by the farmers
4. sufficient time is not allowed for the land to recover
According to the recommendations of the National Forest Policy of 1988, what percentage of the area is recommended as forest cover for hills?
| 1. | 19 | 2. | 33 |
| 3. | 50 | 4. | 67 |
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