Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Studies Environment Pollution
Which of the following statements is true about the Air Quality Index?
1
It indicates the colour of the air.
2
It predicts ozone levels in your area.
3
It determines the intensity of sound and sound pollution.
4
More than one of the above
5
None of the above