Q. No.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
Air (Prevention and Control of Pollution) Act was amended in 1987 to include among pollutants:
1. Vehicular exhaust
2. Allergy causing pollen
3. Noise
4. Particulates of size 2.5 micrometer or below
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 |
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 |
A thin layer of ozone is present in the:
(1) Troposphere
(2) Lower stratosphere
(3) Upper stratosphere
(4) Mesosphere
Excess nitrates in drinking water can cause:
1. Itai–itai disease
2. Black foot disease
3. Methemoglobinemia (Blue baby syndrome)
4. Minamata disease
I. are the result of a nutrient, like nitrogen or phosphorus from various sources entering the aquatic system and causing excessive growth of algae.
II. lead to increased dissolved oxygen in water body as algae are photosynthetic
1. Only I is correct
2. Only II is correct
3. Both I and II are correct
4. Both I and II are incorrect
1. 2030
2. 2050
3. 2060
4. 2070
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