Question

why doctor dips a thermometer in a liquid before use
why the thermometer is kept under the tongue

Answer 1

Hey Friend :)

Doctors dip the Thermometer in an antigerminal solutions in order to kill the harmful diseases causing Microbes so that the is not passed on the another person when reused.

Thermometer is kept under the tongue bcoz that particular area under the tongue tells us about the most appropriate body temperature.

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HOPE IT HELPS YOU☺☺

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Answer 2

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• The liquid is an alcohol based disinfectant. This liquid cleans the thermometer.

• The thermometer is kept under the tongue, because, it gives the correct reading of inner body temperature.