state gov AP Police SI (Pre+Mains) Mock Test 2022 General Knowledge Ecology and Environment Environmental pollution
Which of the following help in the formation of ground-level ozone?
(A) NOx
(B) Hydrogen
(C) Sunlight
(D) VOC's
1
A, B and C only
2
B, C and D only
3
C, D and A only
4
All of these