Question

Define photochemical reaction.

Answer 1

Photochemical reaction, a chemical reaction initiated by the absorption of energy in the form of light. 

Answer 2

Hey mate !!

the reaction that take place in the presence of light is known as photochemical reaction.



♥for example decomposition of silver chloride:-

◀ AgCl ------∆ ----- => Ag + Cl 2 .



♥for example decomposition of Silver Bromide.


◀ AgBr --------∆ ------=> Ag + Br2 .



♥for example decomposition of hydrogen peroxide


◀ H2O2 --------∆ => H2 + O2





summerize :-


the reaction which take place in presence of Sunlight or heat is known as photolyic or photochemical reaction.


hope it helps Dear !!!

thanks