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Question

Why can’t we use a laboratory thermometer to measure the body temperature?

A
Because it does not have a kink.
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B
Its range does not include the body temperature range.
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C
It is difficult to handle.
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D
Laboratory thermometers do not have a digital display.
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Solution

The correct option is A Because it does not have a kink.
A lab thermometer can’t be used to measure body temperature as it does not have a kink. The kink, in a clinical thermometer, prevents mercury level from falling on its own so that temperature can be read even when the thermometer is no longer in contact with our body.

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