Photo-chemical reactions occur in presence of ___________________?
Correct answer: A. Sunlight
- A. Sunlight
- B. Darkness
- C. Solid catalysts
- D. Monochromatic radiation only
Explanation
Photochemical reactions require radiation to supply the energy needed to excite reacting molecules, and sunlight is the usual natural source. They do not require darkness, a solid catalyst, or exclusively monochromatic radiation.
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