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Q. No.In India, the Air (Prevention and Control of Pollution) Act came into force in 1981, but was amended to include noise as an air pollutant in:
1. 1982
2. 1985
3. 1987
4. 1989
Subtopic: Air Pollution |
88%
From NCERT
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Which of the following gases is responsible for the least contribution to total global warming?
1. Carbon dioxide
2. Methane
3. CFCs
4. N2O
1. Carbon dioxide
2. Methane
3. CFCs
4. N2O
Subtopic: Green House Effect & Global Warming |
76%
From NCERT
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Consider the two statements:
| Assertion (A): | A high dose of UV-B causes inflammation of cornea, called snow-blindness. |
| Reason (R): | UV radiation of wavelengths shorter than UV-B are almost completely absorbed by Earth’s atmosphere, given that the ozone layer is intact. |
| 1. | Both (A) and (R) are True and (R) is the correct explanation of (A) |
| 2. | Both (A) and (R) are True but (R) is not the correct explanation of (A). |
| 3. | (A) is True but (R) is False. |
| 4. | Both (A) and (R) are False. |
Subtopic: Ozone Layer Depletion |
From NCERT
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Compressed natural gas (CNG) is a fuel gas mainly composed of:
1. Hydrogen
2. Methane
3. Ammonia
4. Sulphur dioxide
1. Hydrogen
2. Methane
3. Ammonia
4. Sulphur dioxide
Subtopic: Air Pollution |
83%
From NCERT
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Consider the two statements:
| Statement I: | Irrigation without proper drainage of water leads to water-logging in the soil. |
| Statement II: | Besides affecting the crops, water-logging draws salt to the surface of the soil. |
| 1. | Statement I is incorrect; Statement II is correct |
| 2. | Statement I is correct; Statement II is correct |
| 3. | Statement I is correct; Statement II is incorrect |
| 4. | Statement I is incorrect; Statement II is incorrect |
Subtopic: Water Pollution |
84%
From NCERT
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Consider the two statements:
| Assertion (A): | Primary contaminants for accelerated eutrophication of lakes are nitrates and phosphates. |
| Reason (R): | Nitrates and phosphates are plant nutrients which over-stimulate the growth of algae. |
| 1. | Both (A) and (R) are True and (R) correctly explains the (A). |
| 2. | Both (A) and (R) are True but (R) does not correctly explain the (A). |
| 3. | (A) is False but (R) is True. |
| 4. | (A) is True but (R) is False. |
Subtopic: Water Pollution |
87%
From NCERT
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Consider the given two statements:
| Assertion (A): | Recycling, an essential element of e-waste management, must be carried out properly especially in developing countries. |
| Reason (R): | Informally recycling – much of it by hand in developing countries, exposes workers to hazardous and carcinogenic substances such as mercury, lead and cadmium. |
| 1. | (A) is true (R) but is False |
| 2. | Both (A) and (R) are True and (R) correctly explains (A) |
| 3. | Both (A) and (R) are True and but (R) does not correctly explain (A) |
| 4. | Both (A) and (R) are False |
Subtopic: Solid Waste Pollution |
73%
From NCERT
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The thickness of ozone in a column of air in the atmosphere is measured in terms of :
| 1. | Kilobase | 2. | Dobson unit |
| 3. | Decibels | 4. | Decameter |
Subtopic: Ozone Layer Depletion |
79%
From NCERT
NEET - 2023
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Which one of the following statements is not correct?
| 1. | The amount of some toxic substances of industrial wastewater increases in the organisms at successive trophic levels. |
| 2. | The micro-organisms involved in biodegradation of organic matter in a sewage-polluted water body consume aquatic organisms. |
| 3. | Algal blooms caused by excess of organic matter in water improve water quality and promote fisheries. |
| 4. | Water hyacinth grows abundantly in eutrophic water bodies and lead to an imbalance in the ecosystem dynamics of the water body. |
Subtopic: Water Pollution |
64%
From NCERT
NEET - 2023
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Given below are two statements:
| I: | Electrostatic precipitator is most widely used in a thermal power plant. |
| II: | Electrostatic precipitator in a thermal power plant removes ionising radiations. |
| 1. | Statement I is incorrect but Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct but Statement II is incorrect. |
Subtopic: Air Pollution |
From NCERT
NEET - 2023
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