Question

Write an advantage and a disadvantage of using mercury as a thermometric fluid​

Answer 1

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The reasons for using mercury as a thermometric liquid are the following:-

☑️It expands uniformly when heated.

☑️It has low specific heat capacity.

☑️I has a high boiling point (357 °C) and a low freezing point (-39 °C).

☑️It is a good conductor of heat.

☑️It does not stick to the walls of the glass tube.q

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The disadvantages of mercury as thermometric liquid are:

☑️i) its temperature coefficient of expansion is very low and it cannot be used to measure the temperature below –39°C and above 357°C.

☑️ii) Mercury thermometer cannot seebe used in very cold regions like arctic regions because it freezes below a temperature of 39o C.

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