Effects of Air Pollutants

Q. A location with a luxuriant growth of lichens on the trees indicates that the:

1. Trees are very healthy
2. Trees are heavily infested
3. Location is highly polluted
4. Location is not polluted

Q.

How is sulphur dioxide and oxides of nitrogen produced? How does the release of these compounds contribute to air pollution?

Q. Which of the following on inhalation dissolves in blood haemoglobin more rapidly than oxygen?

1. Sulphur dioxide
2. Ozone
3. Carbon monoxide
4. Nitric oxide

Q. Which of the following gases do not cause acid rain?

1. Sulphur dioxide
2. Methane
3. Nitrous oxide
4. Carbon monoxide

Q. Which of the following contribute(s) to acid rain?

1. Sulphuric acid
2. Hydrochloric acid
3. Nitric acid
4. Perchloric acid

Q. Nitrogen oxides produced from the emission of automobiles and power plants are the source of fine airborne particles which lead to

1. Photochemical smog
2. Dry air deposition
3. Acid rain
4. Alkali rain

Q.

Acid rain mainly contains:

1. Nitric acid

2. Hydro chloric acid

3. Sulphuric acid

4. Both a and c

Q. Benzene and formaldehyde are two among many volatile organic compounds that cause air pollution. Given below are a few negative effects of these volatile compounds on humans. Which of these is/are exclusively caused by the above mentioned compounds and not by other volatile compounds?

1. (ii) and (iii)
2. (i), (ii) and (iv)
3. Only iv
4. (i) and (ii)

Q. Nitrogen oxides and volatile compounds react in the presence of heat and sunlight to form ___.

Q. Choose the aspects which are common to sulphur and nitrogen oxides?

1. (i) and (iv)
2. Only (iii)
3. (i), (ii) and (iv)
4. (iii) and (iv)

Q.

Why is it necessary to remove sulfur from petroleum products?

1. To reduce the emission of sulfur dioxide in the exhaust fumes

2. To increase the efficiency of automobile engines

3. To increase the lifespan of engine silencers

4. None of the above

Q. Choose the aspects which are common to sulphur and nitrogen oxides?

1. (i) and (iv)
2. Only (iii)
3. (i), (ii) and (iv)
4. (iii) and (iv)

Q.

Rain is called acid rain when its pH is below

1. 7

2. 6.5

3. 6

4. 5.6

Q.

Acid rains are caused by excessive atmospheric pollution due to

1. SO₂

2. N₂O

3. CO₂

4. NH₃

Q. Due to increasing air-borne allergens and pollutants, many people in urban areas are suffering from respiratory disorders like wheezing due to

1. reduction in the secretion of surfactant; pneumocytes
2. benign growth on mucous lining of nasal cavity
3. inflammation of bronchi and bronchioles
4. proliferation of fibrous tissues and damage of the alveolar walls

Q. Acid rains are produced by excess release of

1. Carbon monoxide by incomplete combustion
2. Carbon dioxide by combustion and animal respiration
3. Ammonia by industries and coal gas
4. Nitrogen oxides and sulphur dioxide from burning and industry emissions

Q. The toxic gas that leaked in the Bhopal gas tragedy was

1. Potassium isothiocyanate
2. Sodium isothiocyanate
3. Ethyl thiocyanate
4. Methyl isocyanate