JEE Main202118 Mar 2021Morning ShiftChemistryEnvironmental ChemistryActual
The satements that are TRUE: (A) Methane leads to both global warming and photochemical smog (B) Methane is generated from paddy fields (C) Methane is a stronger global warming gas than CO 2 (D) Methane is a part of reducing smog Choose the most appropriate answer from the options given below:
Options
- A( A ) , ( B ) , ( C ) only
- B( A ) and ( B ) only
- C( B ) , ( C ) , ( D ) only
- D( A ) , ( B ) , ( D ) only
Correct answer
A. ( A ) , ( B ) , ( C ) only
Step-by-step solution
Methane leads to both global warming & photochemical smog. Methane is generated in large amounts from paddy fields. CO 2 can be absorbed by photosynthesis, or by formation of acid rain etc., while no such activities are there for methane. Hence methane is stronger global warming gas than CO 2 , Methane is not a component of reducing smog.