A photochemical reaction is _______________?
Correct answer: C. Initiated by light
- A. Accompanied with emission of light
- B. Catalysed by light
- C. Initiated by light
- D. All A., B. & C.
Explanation
A photochemical reaction is initiated when reactant molecules absorb light and acquire enough energy to react. Light need not be emitted, and it is not necessarily acting as a catalyst.
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