Question

Why does mercury expand when we put a thermometer into the mouth?

Answer 1

Answer:

This heat makes the liquid mercury of the thermometer bulb to expand (increase in volume) due to which the mercury thread is pushed to a higher level in the thermometer tube.

Answer 2

Answer:

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Explanation:

This heat makes the liquid mercury of the thermometer bulb to expand (increase in volume) due to which the mercury thread is pushed to a higher level in the thermometer tube.