Which one of the following is an example of physical change?

Which one of the following is an example of physical change?

[amp_mcq option1=”Flowering of plants” option2=”Clotting of blood” option3=”Cooking of food” option4=”Melting of ice” correct=”option4″]

This question was previously asked in
UPSC Geoscientist – 2022
The correct answer is Melting of ice.
A physical change alters the form or appearance of a substance but not its chemical composition. It is often reversible. A chemical change results in the formation of new substances with different chemical properties.
Melting of ice is a change of state from solid water (ice) to liquid water. The chemical formula remains H₂O. This process is reversible (freezing). Flowering, clotting of blood, and cooking of food involve chemical reactions and the formation of new substances.
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