Tag: air and air pollution

Questions Related to air and air pollution

Lung diseases are about four times more probable in urban areas as compared to rural areas. This is due to the presence of which of the following in atmosphere?

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. $CO _{2}$

  2. $NO _{2}$

  3. $O _{2}$

  4. $N _{2}$

Show answer
Correct Option: B
Explanation:

When nitrogen is released, it combines with oxygen and becomes NO, later it combines with oxygen to become $NO _2$. It causes       of lungs, lowers the resistance to respiratory infection. If level increases it causes intense astama on people. Because air pollution is more in urban than in rural areas,  lung diseases are more probable in urban areas.

Which of the following is a tropospheric gaseous pollutant?

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. $H _2S$

  2. Dust

  3. Smoke

  4. Mist

Show answer
Correct Option: A
Explanation:

Tropospheric pollution is caused by gaseous pollutant and particulate matter. Some of the gaseous air pollutant are hydrogen sulphide, oxides of sulphur, oxides of nitrogen etc.

Which of the following air pollutant has a smell of rotten egg?

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. Hydrogen sulphide

  2. Hydrogen chloride

  3. Ammonia

  4. Nitric acid

Show answer
Correct Option: A
Explanation:

Hydrogen sulfide gas is a naturally occuring chemical. The gas has a characteristic rotten egg odor at low concentrations. About half of the population can smell it at concentrations as low as 8 parts per billion (ppb) in air, and more than 90% can smell it at levels of 50 ppb.  At higher concentrations, hydrogen sulfide rapidly deadens the sense of smell.

Hydrocarbons is produced as a result of:

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. fertilizer

  2. incomplete combustion of fuels in automobile engines.

  3. paper industry

  4. oil refinery

Show answer
Correct Option: B
Explanation:

Hydrocarbon is produced as a result of incomplete combustion of fuels in automobile engines.
In animals, hydrocarbons can cause cancer, while in plants, they cause ageing by breaking down tissues, which causes shedding of leaves, twigs and flowers.

Which of the following condition is caused due to lead pollutant?

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. Kidney damage

  2. Brain damage

  3. CNS damage

  4. All of above

Show answer
Correct Option: D
Explanation:

Lead is one of the major pollutant which is released from lead batteries, industries etc. It damages kidney, liver, brain and central nervous system.

Oil or natural gas is considered sour if it has a high percentage of:

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. hydrogen chloride

  2. sulphuric acid

  3. hydrogen sulphide

  4. chlorine

Show answer
Correct Option: C
Explanation:

Hydrogen sulfide gas is found in petroleum and natural gas. Oil or natural gas is considered sour if it has a high percentage of hydrogen sulfide. Natural gas can contain up to 28 percent hydrogen sulfide gas, consequently,  it may be an air pollutant near petroleum refineries and in oil and gas extraction areas.

In the atmosphere, the presence of which can form a brown ring with $FeSO _{4}$?

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. $NO$

  2. $N _{2}$

  3. $NO _{2}$

  4. $N _{2}O$

Show answer
Correct Option: A
Explanation:

Brown ring compound $FeSO _4.NO$

What is the reason for irritant red haze in traffic and congested places?

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. Oxides of nitrogen

  2. Oxides of sulphur

  3. Oxides of carbon

  4. Oxides of phosphorus

Show answer
Correct Option: A
Explanation:
The irritant red haze in traffic and congested places is due to the oxides of Nitrogen.
Nitrogen dioxide has a deep red color ,and is a poisonous gas. When it is mixed with aerosols, it causes reddish brown colour of haze in congested places.The fuel release of cars and trucks are the major sources of Nitrogen oxides. Mostly NO is present in automobile exhaust, and ​once this NO is released in the atmosphere it combines with Oxygen of the air to form by the following chemical reaction.
                          $2NO+{ O } _{ 2 }\longrightarrow 2N{ O } _{ 2 }$

 Automobile emits which gases (in large quantities):

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution


  1. $NO$ and $NO _2$

  2. $CO$ and $CO _2$

  3. $NO _2$

  4. $NO$ and $N _2O _5$

Show answer
Correct Option: A
Explanation:

Air pollution from cars and trucks is split into primary and secondary pollution. Primary pollution is emitted directly into the atmosphere; secondary pollution results from chemical reactions between pollutants in the atmosphere. The following are the major pollutants from motor vehicles:

  1. Particulate matter (PM)
  2. Hydrocarbons (HC)
  3. Nitrogen oxides (NOX)
  4. Carbon monoxide (CO)
  5. Sulfur dioxide
  6. Hazardous air pollutants
  7. Greenhouse gases

Which of the following is precursors of photochemical smog?

chemistry air and water pollution control smoke, dust and other air pollutants, acid rain air pollutants and its effects air and air pollution

  1. $NO _2$ and Hydrocarbon

  2. $P _2O _5$  and HydrocarbonP2O5

  3. Ethanol and $NO _2$

  4. Methanol and $SiO _2$

Show answer
Correct Option: A
Explanation:
  1. Photochemical smog is composed of primary and secondary pollutants.
  2. Primary pollutants, which include nitrogen oxides and volatile organic compounds are introduced into the atmosphere via vehicular emissions and industrial processes.
  3. Secondary pollutants, like ozone, result from the reaction of primary pollutants with ultraviolet light.