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Which of the following is a physical change?
Question

Which of the following is a physical change?

A.

Oxidation

B.

Reduction

C.

Sublimation

D.

Decomposition

Correct option is C

The correct answer is option (C) Sublimation
A physical change is a change in the physical properties (e.g., shape, state, or size) of a substance without altering its chemical composition.
Sublimation is the process where a substance changes directly from a solid to a gas (or vice versa) without passing through the liquid phase.
Example: Dry ice sublimates directly into gas.
Information Booster:-
  • Oxidation : A chemical change where a substance reacts with oxygen (e.g., rusting of iron)
  • Reduction : A chemical change involving the gain of electrons or loss of oxygen.
  •  Decomposition : A chemical change where a compound breaks down into simpler substances (e.g., electrolysis of water into hydrogen and oxygen).

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