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Question

Three substances given below are kept in the open for a few days and some changes were observed.

Which of the substances will show a chemical change?



A

Eggs

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B

Plastic bottle

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C

Both eggs & moth balls

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D

All eggs, plastic bottle and moth balls

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Solution

The correct option is B

Eggs


During a chemical change one substance reacts with another to undergo a change in chemical composition. Chemical change brings change in the chemical properties of matter and we get new substances. Here the eggs rot and release a foul odour. The moth balls become smaller in size due to sublimation and the plastic bottle doesn't show any change, hence they are physical changes.


Chemistry

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