Tag: planet earth

Questions Related to planet earth

 A thick fog-like layer in the atmosphere, especially during winters it is called:

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. smoke

  2. smog

  3. dust

  4. none of the above

Show answer
Correct Option: B
Explanation:

Smog is a thick fog-like layer in the atmosphere, especially during winters, made up of fog and smoke. 


Sulphur dioxide is mainly produced by burning fuels such as coal. It causes respiratory problems, including permanent lung damage.

Hence, the correct option is $\text{B}$

A mixture of various gases with dust and water vapour is known as:

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. smoke

  2. smog

  3. dust

  4. fog

Show answer
Correct Option: B
Explanation:

Smog can be defined as a mixture of various gases with dust and water vapour.

Which of the following is affected by acid rains?

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. Infrastructure

  2. Aquatic life

  3. Plants

  4. All of the above

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Correct Option: D
Explanation:

Buildings are eroded by acid rains. When acid rain makes way into lakes, rivers it affects the aquatic life and affects the forests by affecting the minerals uptake of the plants.

Acid rain is a mixture of:

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. sulphuric acid with hydrochloric acid and nitric acid with nitrous acid

  2. sulphuric acid with sulphurous acid and nitric acid with hydrochloric acid

  3. sulphuric acid with sulphurous acid and nitric acid with nitrous acid

  4. sulphuric acid with nitrous acid and nitric acid with sulphurous acid

Show answer
Correct Option: C
Explanation:

When oxides of sulphur and nitrogen emitted by the industries, react with the moisture present in the atmosphere they form acids.

The acids formed by sulphur oxides are sulphuric acid with sulphurous acid and the acids formed by nitrogen oxides are nitric acid with nitrous acid.
These acids are responsible for the acidity of rains. The pH of acid rain is 5.5
Thus, the correct answer is option (C).

Heavy _____ is responsible for decreasing the UV radiation greatly.

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. smoke

  2. smog

  3. both $A$ and $B$

  4. none of the above

Show answer
Correct Option: B
Explanation:

Heavy smog is responsible for decreasing the UV radiation greatly.

Smoke is a form of wet deposition of acid rain. True or false?

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. True

  2. False

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Correct Option: B
Explanation:

Smoke is a form of dry deposition of acid rain.

What occurs when acidic oxides generated of carbon, nitrogen and sulphur due to burning of fossil fuels come in contact of rain?

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. Acid rain

  2. Basic Rain

  3. Normal Rain

  4. Hailstorms

Show answer
Correct Option: A
Explanation:

Acid rains are caused when the pollutants such as sulphur dioxide and nitrous oxide formed due to the burning of the fossil fuels are released in the atmosphere, where they travel upwards and mixes with oxygen, air and moisture to form pollutants called acidic oxide pollutants.

The pH of acid rain is in the range:

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. 2 to 3.5

  2. 3.5 to 5.6

  3. 5.6 to 6.5

  4. 1 to 3.5

Show answer
Correct Option: B
Explanation:

The pH of acid rain is in the range 3.5 to 5.6 . Typical value can be 4.0 .

Which of the following is not a cause of acid rain?

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. Burning of fossil fuels

  2. Bacterial decomposition of organic matter

  3. Internal combustion engines

  4. None of the above

Show answer
Correct Option: D
Explanation:

The causes of acid rain are:

  • Burning of fossil fuels
  • Bacterial decomposition of organic matter
  • Internal combustion engines

Which of the following is a wet deposition of acid rain?

chemistry planet earth acid deposition air and air pollution natural resources- air, water and land

  1. Fog

  2. Rain

  3. Snow

  4. All of the above

Show answer
Correct Option: D
Explanation:

Wet deposition is rain, sleet, snow, or fog that has become more acidic than normal. Wet deposition of acids occurs when any form of precipitation removes acids from the atmosphere and delivers it to the Earth's surface.