Question

Combustion is a ____________ change.
(i) physical (ii) chemical (iii) both a & b (iv) none of the above

Answer 1

Answer:

Combustion is a _chemical-change.

Explanation:

Combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame.

Answer 2

Answer:

ii chemical

Explanation:

Combustion, a chemical reaction between substances, usually including oxygen and usually accompanied by the generation of heat and light in the form of flame.