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We cannot use other liquids in thermometer since it may not have a wide range of temperature for remaining in the liquid state. It may stick to the glass of the thermometer. It may be transparent. The liquid may not be sensitive to thermal expansion and may not have a uniform expansion with heat. The liquid may not be a good conductor of heat.The liquid may not be found in pure form. Hence mercury is the best liquid as a thermometric liquid.

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15y ago

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