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Physical Change

Mercury, a me...

Question

Mercury, a metal filled inside a thermometer rise and fall as per the change in our body temperature. This change is an example of _____ change.

A

an irreversible physical

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B

an irreversible chemical

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C

a reversible physical

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D

a reversible chemical

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Solution

The correct option is C a reversible physical
Mercury is a liquid metal filled in a thermometer. Depending on the variation in our body temperature, the metal expands and contracts. However, as there aren’t any new substances formed, this is a physical change. So, the rise and fall of mercury in a thermometer is an example of reversible physical change.

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