Air Pollution MCQ – Environmental Engineering

71. Pollution by depletion of ozone layer, in the environment, is caused due to the reaction of ozone with

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

72. Electrostatic precipitator is a device to control

1. SO₂ emission
2. Particulate emission
3. Both SO₂ and particulate emission
4. Precipitation of Al(OH)₃ in water coagulation

73. The air pollution which is described as ‘disease of wealth’ is termed as

1. Natural pollution
2. Industrial pollution
3. Pollution due to transportation
4. Radioactive pollution

74. The gases produced by landfills primarily comprised of

1. Ethane and oxygen
2. Sulphur dioxide and nitrogen dioxide
3. Methane and carbon dioxide
4. Carbon monoxide and hydrogen sulphide

75. The Argon content in composition of clean, dry and atmospheric air in percentage by volume will be

1. 0.93%
2. 0.032%
3. 20.95%
4. 78.09%

76. The particulate contaminants are removed from the polluted gas stream by incorporating the particulates into liquid droplets are termed as

1. Electrostatic precipitators
2. Fabric filters
3. Cyclone separators
4. Wet collectors

77. The atmospheric condition in which certain substances are present in such concentration that affect the health of humans, animals, plants and property is known as

1. Water pollution
2. Marine pollution
3. Air pollution
4. Noise pollution

78. The polluting gas which is primarily responsible for causing the “green house effect” and “global warming” is

1. Sulphur dioxide
2. Hydrogen sulphide
3. Carbon monoxide
4. None of these

79. Depletion of 0zone layer in the outer atmosphere is likely to increase the incidence of the following disease

1. Lung cancer
2. Skin cancer
3. Bronchitis
4. None of these

80. Approximate quantity of CO₂ in the atmosphere in PPM (parts per million) is

1. 20
2. 2
3. 200
4. 400