Which of the following component of a mercury thermometer is responsible for keeping the level of mercury from falling suddenly?

Bulb

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Scale

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Capillary

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Kink

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Solution

The correct option is D Kink
The kink in clinical thermometers is provided specifically to keep the risen level of mercury from falling instantly into the bulb after measuring the body temperature. This is provided so that one can take the reading of the measured body temperature. Kink is only provided in clinical thermometers and not in laboratory thermometers.

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___ in a mercury thermometer is responsible for keeping the level of mercury from falling even after we take it out of our mouth

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