Question

Which of the following is not an air pollutant?
A. sulphur dioxide
B. sewage
C. CFCs
D. SPM

Answer 1

Answer:

answer is option B. sewage

Answer 2

B. sewage is not an air pollutant.

Explanation:

• Sulphur dioxide, chlorofluorocarbons and suspended particulate matter are in gaseous form. So, these are air pollutants.
• Suspended particulate matter includes dust, mist or fumes.
• Sewage defines the wastewater produced by a community of people.
• A sewage system is associated in an individual house or industry which brings the wastewater produced from that particular house or industry to a common area.
• Later, the water is treated (filtered and purified) accordingly for further use or it is let into ocean or river.
• Thus, sewage comes under water pollutant.