- 1(current)
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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| 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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Subtopic: Air Pollution - Smog |
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| Statement I: | An allotrope of oxygen is an important intermediate in the formation of reducing smog. |
| Statement II: | Gases such as oxides of nitrogen and sulphur present in the troposphere contribute to the formation of photochemical smog. |
Choose the correct answer from the options given below:
1. Both Statement I and Statement II are false.
2. Statement I is true but Statement II is false.
3. Both Statement I and Statement II are true.
4. Statement I is false but Statement II is true.
Subtopic: Air Pollution - Smog |
Level 4: Below 35%
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The presence of ozone in the troposphere-
1. Protects us from UV radiation.
2. Protects us from X-ray radiation.
3. Protects us from the greenhouse effect.
4. Generates photochemical smog.
Subtopic: Air Pollution - Smog |
Level 3: 35%-60%
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The correct set of species responsible for the photochemical smog is:
1. NO, NO2, O3 and hydrocarbons
2. N2, NO2 and hydrocarbons
3. CO2, NO2, SO2, and hydrocarbons
4. N2, O2, O3 and hydrocarbons
Subtopic: Air Pollution - Smog |
78%
Level 2: 60%+
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