Q. No.Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | Photochemical smog is a primary air pollutant. |
| Reason (R): | It is formed in traffic-congested cities where the conditions are cold and the intensity of solar radiation is less. |
In the light of the above statements, choose the most appropriate answer from the options given below:
| 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. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Â Air Pollution |
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Which of the following is not an ill effect of PAN?
1. inhibition of electron transport system in plants
2. damage to chloroplasts in plants
3. acute irritation of eyes in humans
4. leukemia in humans
Subtopic: Â Air Pollution |
 62%
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Match the following and choose the correct option.
| Column I | Column II | ||
| A. | Environment Protection Act | i. | 1974 |
| B. | Air prevention & Control of pollution Act | ii. | 1987 |
| C. | Water act | iii. | 1986 |
| D. | Amendment of Air Act to include noise as an air pollutant | iv. | 1981 |
The correct match is :
| Options: | A | B | C | D |
| 1. | iii | iv | i | ii |
| 2. | i | iii | ii | iv |
| 3. | iv | i | ii | iii |
| 4. | iii | iv | ii | i |
Subtopic: Â Introduction to Pollution & Types |Â Air Pollution |Â Water Pollution |
 84%
From NCERT
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The material generally used for soundproofing rooms like a recording studio or an auditorium is:
| 1. | Cotton | 2. | Coir |
| 3. | Wood | 4. | Styrofoam |
Subtopic: Â Air Pollution |
 70%
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Consider the following statements:
| I. | Catalytic converters are fitted into automobiles for reducing the emission of poisonous gases. |
| II. | They convert unburnt hydrocarbons to CO2 and H2O, and CO and NO to CO2 and N2 respectively. |
| III. | Vehicles equipped with catalytic converters should use leaded petrol. |
Which of the above statements are true?
| 1. | I and II only | 2. | I and III only |
| 3. | II and III only | 4. | I, II, and III |
Subtopic: Â Air Pollution |
 82%
From NCERT
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Links
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Subtopic: Â Air Pollution |
 59%
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Catalytic converters can also contribute to environmental pollution by increasing the emission of:
| 1. | Methane | 2. | Hydrogen cyanide |
| 3. | Particulate matter | 4. | Carbon dioxide |
Subtopic: Â Air Pollution |
 62%
From NCERT
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Subtopic: Â Air Pollution |
 52%
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What would be true for acid rain?
| 1. | Acid rain is caused by emissions of sulfur dioxide and nitrogen oxide, which react with the water molecules in the atmosphere to produce acids. |
| 2. | The pH of acid rain is most commonly below 4. |
| 3. | Acid rain has direct significant effects on human health. |
| 4. | Both the higher pH and lower aluminium concentrations in surface water that occur as a result of acid rain can cause damage to fish and other aquatic animals. |
Subtopic: Â Air Pollution |
 69%
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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
| Assertion (A): | Motor vehicles equipped with catalytic converters should use unleaded petrol. |
| Reason (R): | Lead poisoning affects brain and is responsible for many cases of intellectual disabilities. |
| 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. |
- If both the assertion and the reason are true and the reason is a correct explanation of the assertion
- If both the assertion and reason are true but the reason is not a correct explanation of the assertion
- If the assertion is true but the reason is false
- If both the assertion and reason are false
Subtopic: Â Air Pollution |
 57%
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