Question

A Mercury thermometer usually has a kink (bend) whereas an alcohol thermometer does not have one. Can you give one reason for it?

Answer 1

Answer:

As soon as the thermometer is taken out of our mouth, i.e., from a hotter region to a colder region, the mercury in it starts contracting and tends to flow back into the bulb. The kink in the stem prevents the mercury from falling back immediately, thereby giving us the accurate reading of our body temperature.

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Answer 2

Answer:

It has kink to prevent the falling down of mercury alcohol doesn't has kink as it has to measure change over mercury.

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