2020 Phase-2 Environmental IssuesParticulate matter and air pollution Medium Question 16 of 94 in Environmental Issues

According to Central Pollution Control Board [CPCB] what size (in diameter) of particulate is responsible for causing greater harm to human health?

A 3.0 micrometers
B 3.5 micrometers
C 2.5 micrometers
D 4.0 micrometers

The answer is C.

Solution

According to the CPCB, particulate matter of size 2.5 micrometers or below (PM2.5) is considered responsible for causing greater harm to human health, as it can penetrate deep into the respiratory system.

Concept Particulate matter and air pollution

Environmental Issues in past papers

94 questions from this chapter have appeared across 24 exam years.