Question

18. Which amongst the following represents a photochemical decomposition?
a. CaCO3(s) - CaO(s) + CO2(g)
b. 2AgBr(s) → 2Ag(s) + Br2(g)
C.2H2O(l) → 2H2(g) + O2(g)
d. 2FeSO4(s) Fe2O3(s) + SO2(g) + S03(g)​

Answer 1

Answer:

Explanation:

second one

Agbr..Ag + Br

Answer 2

Answer:

B. 2AgBr(s) - 2Ag(s) + Br2(g)

This happens in presence of sunlight.

hope this will help you.