- 1(current)
Q. No.Photochemical smog occurs in warm, dry, and sunny climates. One of the following is not amongst the components of photochemical smog. Identify it:
1. NO2
2. O3
3. SO2
4. Unsaturated hydrocarbon
The incorrect statements about classical smog among the following is:
| 1. | Its main components are produced by the action of sunlight on emissions of automobiles and factories |
| 2. | Produced in a cold and humid climate |
| 3. | It contains compounds of reducing nature |
| 4. | It contains smoke, fog, and sulfur dioxide |
Which of the following statements about photochemical smog is wrong?
| 1. | It has high concentration of oxidising agents |
| 2. | It has low concentration of oxidising agent |
| 3. | It can be controlled by controlling the release of NO2, hydrocarbons, ozone etc. |
| 4. | Plantation of some plants like pinus helps in controlling photochemical smog |
Dinitrogen and dioxygen are main constituents of air but these do not react with each other to form dioxides of nitrogen because ______.
| 1. | The reaction is endothermic and requires very high temperature |
| 2. | The reaction can be initiated only in presence of a catalyst |
| 3. | Oxides of nitrogen are unstable |
| 4. | N2 and O2 are unreactive |
The pollutants which come directly in the air from sources are called primary pollutants. Primary pollutants are sometimes converted into secondary pollutants. Which of the following belongs to secondary air pollutants?
1. CO
2. Hydrocarbon
3. Peroxyacetyl nitrate
4. NO
Given below are two statements:
| Assertion (A): | Photochemical smog is oxidizing in nature. |
| Reason (R): | Photochemical smog contains NO2 and O3, which are formed during the sequence of reactions. |
| 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. | (A) is false but (R) is true. |
Match the activity given in Column I with the type of pollution created by it given in Column II.
|
Column I (Activity) |
Column II (Effect) |
|
A. Releasing gases to the atmosphere after burning waste material containing Sulphur |
1. Water pollution |
|
B. Using carbamates as pesticides |
2. Photochemical smog, damage to plant life, corrosion to building material, induce breathing problems, water pollution |
|
C. Using synthetic detergents for washing clothes |
3. Damaging ozone layer |
|
D. Releasing gases produced by automobiles and factories in the atmosphere |
4. May cause nerve disease in human |
|
E. Using chlorofluorocarbon compounds for cleaning computer parts |
5. Classical smog, acid rain, water pollution, induce breathing problems, damage to buildings, corrosion of metals |
Codes
| Options: | A | B | C | D | E |
| 1. | 2 | 3 | 4 | 1 | 5 |
| 2. | 1 | 2 | 3 | 5 | 4 |
| 3. | 5 | 4 | 1 | 2 | 3 |
| 4. | 4 | 5 | 3 | 2 | 1 |
- 1(current)
Q. No.
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