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Question
Why mercury is used as a thermometric liquid? State the reasons. [5 MARKS]
Why mercury is used as a thermometric liquid? State the reasons. [5 MARKS]
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Solution
Properties : 1 Mark each
1) Mercury does not stick to the glass.
2) Mercury is liquid at room temperature and is a good conductor of electricity.
3) It has uniform rate of thermal expansion.
4) Mercury is opaque and shinny, hence it can be seen easily through the glass.
5) It quickly measures the temperature of the body by absorbing small amount of heat.
Properties : 1 Mark each
1) Mercury does not stick to the glass.
2) Mercury is liquid at room temperature and is a good conductor of electricity.
3) It has uniform rate of thermal expansion.
4) Mercury is opaque and shinny, hence it can be seen easily through the glass.
5) It quickly measures the temperature of the body by absorbing small amount of heat.
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