Why only mercury is used in clinical thermometer
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(I) it doesn't to the wall of the glass tube.
(ii) it has a high boiling point and a low melting point.
(ii) it has a high boiling point and a low melting point.
nashaaz:
*it doesn't sticks to the wall of the glass tube.
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in clinical thermometer mercury is used because:-
1. it expand uniformly on heating
2. it doesn't stick to the glass capillary.
1. it expand uniformly on heating
2. it doesn't stick to the glass capillary.
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