Question

which type of reaction is used in black and white photography give equation

Answer 1

photo decomposition rxn is used

Answer 2

Silver chloride is that compund which is used in black and white photography. Also, silver bromide is used for Black and white photography. This type of reaction is called photo chemical decomposition reaction

Equation :

2AgCl --sunlight---> 2Ag + Cl2.

Equation :

2AgBr --sunlight---> 2Ag + Br2.