Question

(a) What is meant by photodecomposition reaction? Give one example.

Answer 1

Photo decomposition or photo chemical reactions is the process of decomposing [splitting up the compound] into its respective constituents.
For example :

when Silver Chloride is exposed to sunlight , it decomposes to form silver metal and chlorine gas
 .
              decomposes
2AgCl(s)  ----------------------> 2Ag  (S) +Cl2(g)
white in colour                       Greyish white colour

Answer 2

Answer:

Explanation:

Those decomposition reactions in which the light is absorbed or required to carry out the decomposition reaction are called  photo-decomposition reaction.For example-

2AgBr→2Ag+Br