Question

During decomposition reactions, energy in the form of _______ is required.
(More than one option can be correct)

• A. heat
• B. light
• C. sound
• D. electricity

Answer 1

Answer: (A), (B), (D)

The correct options are
A heat
B light
D electricity

For decomposition reactions, energy is always required in the form of heat, light or electricity to break down or decompose a single reactant into two or more simpler products.
Generalised form of decomposition reaction is:
$A\stackrel{\mathrm{Energy}}{\to }B+C+....$