Question

in which of the following, no new substance is formed

1. Burning of paper
2. cooking of food
3. Rusting of iron
4. melting of ice​

Answer 1

Answer:

Rusting of Iron

$\huge \pink{~} \red {τ} \green {α} \blue {v} \orange {v} \pink {u} \red {♡}$

Answer 2

Explanation:

Correct option is C)

A physical change does not involve change in composition of a substance.

∙ Melting of iron metal, bending of iron rod, and drawing a wire of iron metal are processes involving change in

physical state and shape of substance, hence these are physical changes.

∙ Rusting of iron forms a new substance called iron oxide and this is a chemical change.