Civil Services TSPSC Group 1 Mock Test 2022-23 General Knowledge Ecology and Environment Environmental pollution
Consider the following statements with respect to the Hydrochlorofluorocarbon (HCFC)-141 b:
1. It is one of the most potent ozone-depleting chemicals.
2. India has successfully achieved the complete phase-out of HCFC-141 b.
3. It is used mainly as a blowing agent in the production of rigid polyurethane (PU) foams.
Which of the statements given above are correct?
1
1 and 2 only
2
2 and 3 only
3
1 and 3 only
4
1, 2 and 3