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Q. No.Select the correct statement among the following is:
1. Photochemical smog has a high concentration of oxidizing agent
2. Classical smog has a high concentration of oxidizing agent
3. Classical smog contains NO2
4. None of these
1. Photochemical smog has a high concentration of oxidizing agent
2. Classical smog has a high concentration of oxidizing agent
3. Classical smog contains NO2
4. None of these
Subtopic: Air Pollution - Smog |
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Consider the following sequence of reactions:
\( \mathrm{NO}_2 \stackrel{h v}{\rightarrow} A+B \\ B+\mathrm{O}_2 \rightarrow \mathrm{O}_3(g) \)
The formula of A can be:
1. \(\mathrm{N}_2 \mathrm{O}\)
2. \(NO \)
3. \(\mathrm{N}_2 \mathrm{O}_3 \)
4. \(N_2\)
\( \mathrm{NO}_2 \stackrel{h v}{\rightarrow} A+B \\ B+\mathrm{O}_2 \rightarrow \mathrm{O}_3(g) \)
The formula of A can be:
1. \(\mathrm{N}_2 \mathrm{O}\)
2. \(NO \)
3. \(\mathrm{N}_2 \mathrm{O}_3 \)
4. \(N_2\)
Subtopic: Air Pollution - Smog |
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How photochemical smog can be controlled in automobiles?
1. Using catalytic convertors which will increase release of nitrogen oxide.
2. Using catalytic convertors which will decrease the release of nitrogen oxide.
3. By increasing sulphur in fuel content.
4. By decreasing sulphur in fuel content.
1. Using catalytic convertors which will increase release of nitrogen oxide.
2. Using catalytic convertors which will decrease the release of nitrogen oxide.
3. By increasing sulphur in fuel content.
4. By decreasing sulphur in fuel content.
Subtopic: Air Pollution - Smog |
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Consider the following reactions:
\(\begin{aligned} & \mathrm{NO}_2 \stackrel{U V}{\rightarrow} A+B \\ & A+O_2 \rightarrow C \\ & B+C \rightarrow \mathrm{NO}_2+\mathrm{O}_2 \end{aligned} \)
A, B, and C respectively are:
1. \(\mathrm{O}, \mathrm{NO}, \mathrm{O}_3 \)
2. \(\mathrm{NO}, \mathrm{O}, \mathrm{O}_3 \)
3. \(\mathrm{NO}, \mathrm{O}_3, \mathrm{O} \)
4. \(\mathrm{O}_3, \mathrm{O}, \mathrm{NO} \)
\(\begin{aligned} & \mathrm{NO}_2 \stackrel{U V}{\rightarrow} A+B \\ & A+O_2 \rightarrow C \\ & B+C \rightarrow \mathrm{NO}_2+\mathrm{O}_2 \end{aligned} \)
A, B, and C respectively are:
1. \(\mathrm{O}, \mathrm{NO}, \mathrm{O}_3 \)
2. \(\mathrm{NO}, \mathrm{O}, \mathrm{O}_3 \)
3. \(\mathrm{NO}, \mathrm{O}_3, \mathrm{O} \)
4. \(\mathrm{O}_3, \mathrm{O}, \mathrm{NO} \)
Subtopic: Air Pollution - Smog |
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pH of acid rain is 5.6 Which of the following reaction is involved in acid rain.
1. H2O + SO2 + O2 → H2SO4
2. N2 + O2 + H2O → HNO3
3. N2O + O2 + H2O → HNO3
4. None of these
1. H2O + SO2 + O2 → H2SO4
2. N2 + O2 + H2O → HNO3
3. N2O + O2 + H2O → HNO3
4. None of these
Subtopic: Air Pollution - Acid Rain |
Level 4: Below 35%
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| Statement I: | Classical fog is reducing smog and is found in a cold and humid region. |
| Statement II: | Photochemical smog is oxidizing and consists of the oxidizing agent as oxides of nitrogen. |
| 1. | Both Statement I & Statement II are true. |
| 2. | Both Statement I & Statement II are false. |
| 3. | Statement I is true while Statement II is false. |
| 4. | Statement I is false while Statement II is true. |
Subtopic: Air Pollution - Smog |
89%
Level 1: 80%+
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Photochemical smog is a mixture of:
1. NO2 + O3 + PAN
2. H2O + O3 + CH4
3. NO + NO2
4. SO2 + SO3 + NO2
1. NO2 + O3 + PAN
2. H2O + O3 + CH4
3. NO + NO2
4. SO2 + SO3 + NO2
Subtopic: Air Pollution - Smog |
80%
Level 1: 80%+
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Statement-I: Water with BOD value greater than 17 is highly polluted.
Statement-II: The oxygen required to decompose biodegradable and non-biodegradable impurities is called BOD.
1. Only statement-I is correct.
2. Only statement-II is correct only.
3. Both statement-I and II are correct.
4. None of the statement is correct.
Statement-II: The oxygen required to decompose biodegradable and non-biodegradable impurities is called BOD.
1. Only statement-I is correct.
2. Only statement-II is correct only.
3. Both statement-I and II are correct.
4. None of the statement is correct.
Subtopic: Water Pollution - Biological Oxygen Demand |
69%
Level 2: 60%+
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Subtopic: Air Pollution - Smog |
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Subtopic: Air Pollution - Acid Rain |
59%
Level 3: 35%-60%
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