Q. 84.5( 2 Votes )
The decomposition reaction which occurs in the presence of sunlight is called photochemical reaction.
For example: 2AgBr → 2Ag + Br2
⇒In the above reaction, silver bromide (AgBr) decomposes to silver and bromine in sunlight.
⇒Light colour of AgBr changes to gray due to sunlight.
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