If an agricultural field is liberally irrigated for a prolonged period of time, it is likely to face the problem of:
1. | Metal Toxicity | 2. | Alkalinity |
3. | Acidity | 4. | Salinity |
Which of the following is an innovative remedy for plastic waste?
1. Burning in the absence of oxygen
2. Burying 500 m deep below the soil surface
3. Polyblend
4. Electrostatic precipitator
Which of the following statements about ozone is correct?
1. Tropospheric ozone protects us from UV radiation
2. Stratospheric ozone is 'bad'
3. Tropospheric ozone is 'good'
4. Stratospheric ozone protects us from UV radiation
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
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 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
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 |
Snow-blindness in Antarctic regions is due to:
1. | Inflammation of cornea due to high doses of UV-B radiation |
2. | High reflection of light from snow |
3. | Damage to the retina caused by infra-red rays |
4. | Freezing of fluids in the eye because of the low temperature |
Montreal Protocol was signed in 1987 for the control of:
1. | Emission of ozone-depleting substances |
2. | Release of Green House gases |
3. | Disposal of e-waste |
4. | Transport of genetically modified organisms from one country to another |
A species that was introduced for ornamentation but has become a troublesome weed in India:
1. Parthenium hysterophorus
2. Eichhornia crassipes
3. Prosopis juliflora
4. Trapa Spinosa