Teaching BPSC बिहार प्राथमिक (1 to 5) शिक्षक भर्ती 4.0 Mock Test Environmental Studies Environment Pollution
The AQI of Delhi in December 2020 was 331. AQI denotes which of the following?
1
Air Quantity Index
2
Air Quantum Index
3
Air Quality Index
4
More than one of the above
5
None of the above