Which one of the following is a chemical change?

Cutting of hair

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Graying of hair naturally

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Swelling of resin in water

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Cutting of fruit

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Solution

The correct option is B Graying of hair naturally
Except graying of hair, all the others are Physical changes as it involves changes in only size and shape. The graying of hair is a chemical change as it involves changes in constitution of hair.

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Similar questions

Match the following:

Column A	Type of Change
Landslides during the rainy season	Periodic change
Ironing of clothes	Chemical change
Bursting of a balloon	Physical change
Rotation of earth on its axis	Reversible change
Curdling of milk	Non-periodic change
Cutting of an apple	Irreversible change

Question 2

Which of the following is a chemical change?
(a) Twinkling of stars
(b) Cooking of vegetables
(c) Cutting of fruits
(d) Boiling of water

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