Which of the following chemical change is a photolytic decomposition reaction?

Options

A. Decomposition of HOCI on standing
B. Formation of hydrogen chloride from their constituent elements
C. Decomposition of limestone
D. Both 1 and 2

Answer

a

Explanation

Decomposition of limestone takes place at higher temperatures. Hence, it is a thermal decomposition reaction. Formation of HCl takes place in presence of light. But it is not a decomposition reaction. HOCI on standing in presence of light decomposes to give HCl and `O_2`.