Photochemical Smog

Q. Which of the following is not a component of photochemical smog?

1. Acrolein
2. Peroxyacetyl nitrate
3. Sulphur dioxide
4. Ozone

Q.

Write down the reactions involved during the formation of photochemical smog.

Q.

Which of the following pairs is secondary precursors of photochemical smog –

1. SO₂ and NO₂

2. SO₂ and hydrocarbons

3. O₃ and PAN

4. NO₂ and hydrocarbons

Q.

Write down the reactions involved during the formation of photochemical smog.

Q. Classical smog is also called:

1. oxidising smog
2. reducing smog
3. photochemical smog
4. summer smog

Q.

What are the harmful effects of photochemical smog and how can they be controlled?

Q.

Smog is a combination of ___________

Q. Name the main gaseous pollutants, explain their types and effect on Environment

Q. Photochemical smog pollution does not contain

1. PAN (peroxyacyl nitrate)
2. Sulphur dioxide
3. Ozone
4. Nitrogen dioxide

Q. Assertion :Classical smog is oxidising smog whereas photochemical smog is reducing smog. Reason: Classical smog occurs in warm, dru and sunny climate whereas photochemical smog occurs in cool humid climate.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q. Which is always present in photochemical smog?

1. $O_3$
2. $C{O}_2$
3. $S{O}_2$
4. $C{H}_4$

Q.

A fire alarm usually detects smoke in case of fire. Where should such an alarm be placed in a room?

1. Near the door

2. On the floor

3. On my wall

4. on the ceiling

Q.

Why are chimneys provided in factories?

Q.

Which of the following statements about control of particulate pollution is not correct?

1. Gravity setting chamber removes larger particles from the air

2. Cyclone collector removes fine particles in the diameter range 5-20 m

3. wet scrubbers are used to wash away all types of particulars

4. In electrostatic precipitator, the particulates are made to acquire positive charge which then attracted by negative electrode and removed.

Q.

You want to buy a house. Would you like to buy a house having windows but no ventilators? Explain your answer.

Q. Photochemical smog is essentially caused by the presence of:

1. $O_2$ and $O_3$
2. $O_2$ and $N_2$
3. Oxides of nitrogen and $O_3$
4. $O_3$ and $N_2$

Q. PAN (peroxyacetyl nitrate), an important constituent of photochemical smog is a

1. Primary pollutant
2. Natural pollutant
3. Secondary pollutant
4. Corollary pollutant

Q. Photochemical smog occurs in a warm, dry and sunny climate. One of the following is not amongst the components of components of photochemical smog. Identify it

1. $S{O}_2$
2. $O_3$
3. Unsaturated hydrocarbons
4. $N{O}_2$

Q. Photochemical smog occurs in warm, dry and sunny climate. One of the following is not amongst the components of photochemical smog, identify it.

1. $N{O}_2$
2. $O_3$
3. $S{O}_2$
4. Unsaturated hydrocarbon

Q. Which one of the following is not a common component of Photochemical Smog?

1. Acrolein
2. Ozone
3. Chloroflurocarbons
4. Peroxyacetyl nitrate

Q. Assertion :Photochemical smog is mainly composed of nitrogen oxides, volatile organic compounds, ozone and peroxyacyl nitrates. Reason: Photochemical smog develops in cold weather conditions by the interaction of secondary pollutants.

1. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
2. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
3. Assertion is correct but Reason is incorrect
4. Both Assertion and Reason are incorrect

Q.

Give reasons for the following :

While cooking, kitchen windows should be kept open.

Q. Which of the following is not a common component of photochemical smog?

1. Peroxyacetyl nitrate
2. Acrolein
3. Fomaldehyde
4. Carbon dioxide

Q. Which one of the following is not a common component of Photochemical song ?

1. Peroxyacetyl nitrate
2. Ozone
3. Acrolein
4. Chlorofluorocarbons

Q. Photochemical smog contains:

1. Ozone
2. PAN
3. Nitrogen dioxide
4. All of the above

Q. Photochemical smog formed in congested metropolitan cities mainly consists of

1. Smoke, peroxyacetyl nitrate and SO${}_2$
2. Ozone, peroxyacetyl nitrate and NO${}_2$
3. Hydrocarbons, SO${}_2$ and CO${}_2$
4. Hydrocarbons, ozone and SO${}_2$

Q. Which one contains secondary pollutants?

1. Automobile exhausts
2. Chimney smog
3. Photochemical smog
4. Classical smog

Q.

Which one of the following nitrogen oxides is an anhydride of nitrous acid ?

1. N₂O₃

2. N₂O₄

3. NO

4. N₂O

Q. Photochemical smog does not contain

1. PAN
2. Ozone
3. Nitrogen dioxide
4. $C{O}_2$

Q. Photochemical smog consists of

1. $O_3,S{O}_2$ and hydrocarbons
2. $O_3,PAN$ and $N{O}_2$
3. $S{O}_{2}PAN$ and smoke
4. $S{O}_2,C{O}_2$ and hydrocarbons