Tag: reducing air pollution

Questions Related to reducing air pollution

Air pollution is caused by:

  1. human.

  2. nature.

  3. both nature and man.

  4. forestation.


Correct Option: C
Explanation:

Air pollution could be both due to natural or man-made causes. The major factors affecting composition of air are: area of forests in the region (potential cause of forest fires), industries present in the area, density of population, urbanization, etc.

The day-to-day condition of the atmosphere at a place with respect to the _______ is called the weather at that place.

  1. temperature

  2. humidity, rainfall

  3. wind-speed

  4. all of the above


Correct Option: D
Explanation:

The day to day condition of the atmosphere at a place with respect to $temperature, humidity, rainfall\, and\, wind-speed$ are called the weather at that place.

Which gas is emitted by the combustion of fossil fuels?

  1. $CO _2$

  2. $SO _2$

  3. $H _2S$

  4. $NO _2$


Correct Option: A
Explanation:

Carbon dioxide is the major gas along with smaller amounts of methane and nitrous oxide which are emitted by the combustion of fossil fuels such as coal, oil, and natural gas and contribute to the major green house gases.

So, the correct answer is option A.

What are the effects of air pollution?


i. greenhouse effect
ii. smog
iii. respiratory disease
iv. acid rain

  1. i,ii, iii

  2. ii, iii, iv

  3. iii, iv, i

  4. i, ii, iii, iv


Correct Option: D
Explanation:

Effects of Air Pollution are greenhouse effect, smog, deforestation and acid rains.

Causes of air pollution are:
i. Exhaust from automobiles
ii. E
xhaust from factories and power plant
iii. CFCs

iv. Polythene

  1. i, ii, iii

  2. ii, iii, iv

  3. iii, iv, i

  4. i, ii, iv


Correct Option: A
Explanation:

Causes of Air pollution are

  • Exhaust from automobiles
  • Exhaust from factories 
  • Power plant
  • CFCs.

Air pollution takes place in two different layers of the earth's atmosphere :_______.

  1. troposphere and stratosphere

  2. mesosphere and troposphere

  3. stratosphere and hydrosphere

  4. troposphere and hydrosphere


Correct Option: A
Explanation:

Air pollution takes place in two different layers of the earth's atmosphere : troposphere and stratosphere.

Which gas is released by improper or incomplete combustion and are generally emitted from vehicles?

  1. $SO _2$

  2. $CO$

  3. $NO$

  4. $CO _2$


Correct Option: B
Explanation:

Carbon Monoxide is formed by improper or incomplete combustion and is generally emitted from vehicles

Major pollutant of air is:

  1. $SO _2$

  2. $NO _2$

  3. both A and B

  4. $CFC$s

  5. all of the above


Correct Option: E
Explanation:

$SO _2, \ NO _2 $ & $ CFC $, all cause air pollution.

Which gas reduces the oxygen-carrying capacity of the blood?

  1. $CO$

  2. $CO _2$

  3. $NO _2$

  4. $SO _2$


Correct Option: A
Explanation:

Carbon monoxide reduces the oxygen-carrying capacity of the blood.

Which of the following are the air pollutants?

  1. Soot

  2. Smog

  3. CFCs

  4. All of the above


Correct Option: D
Explanation:

Soot, Smog, CFCs are all air pollutants.