Question

Select the process that does not add particulate materials to air.

• A. Use of air conditioner
• B. Burning of fossil fuels
• C. Paper industry
• D. Incomplete combustion of coal

Answer 1

The correct option is A

Use of air conditioner

The correct option is A.

1. Suspended particulate matter is a finely divided solid or liquid that is scattered in the air through the process of combustion, industrial activities or due to natural sources.

Explanation for correct answer:

1. The use of air conditioners releases toxic gas named CFC i.e. chlorofluorocarbon.
2. CFCs are responsible for the depletion of the ozone layer.

Explanation for incorrect answer:

Option B:

1. Burning of fossil fuels like coal, natural gas, etc. results in the release of toxic gases like carbon dioxide, nitrous oxide, methane, etc.

Option C:

1. Paper industries release toxic gases like sulfur oxides, nitrogen oxides and carbon dioxide that act as contributors of acid rain.

Option D:

1. Incomplete combustion of coal results in the emission of toxic gas i.e. carbon monoxide which is a greenhouse gas and results in global warming.

Final answer: Use of air conditioner does not add particulate materials to air.