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ScienceCLASS 7CBSE

answered 27 Mar 2026

In a mercury thermometer, the level of mercury rises when its bulb comes in contact with a hot object. What is the reason for this rise in the level of mercury?

A.VERIFIED ANSWERfact-checked by tutors

Soln:

Mercury gets expanded on heating; hence its level rises in the capillary when it comes in contact with a hot object.

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