Chemistry
Assertion (A): The concentration of free radicals in the atmosphere is high during the night.
Reason (R): Free radicals are produced by the photolysis of molecules by solar radiation.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Chemical Reaction
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Answer
A is false but R is true.
Explanation — Free radicals in the atmosphere are mainly formed when stable molecules absorb energy from sunlight and undergo photolysis. Hence, the R is true.
However, the statement that the concentration of free radicals is high during the night is not generally correct because photolysis depends on solar radiation, which is absent at night. Hence, the A is false.
Therefore, A is false but R is true is the correct option.
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