The phenomenon of expansion of ___ due to heat is used in making a thermometer.

Mercury

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Iron

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Zinc

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None of these

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Solution

The correct option is A
Mercury

The phenomenon of expansion of mercury due heat is used in making a thermometer. As the bulb in the thermometer is heated, the mercury expands and show some reading on thermometer that is an indication of the temperature.

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Similar questions

30^{0} C

Give reasons.

(a) What is an excellent coolant.

(b) Mercury is used in a thermometer.

(d) An iron tyre is heated before fitting it on a wheel.

- 60^{o} C

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