1.

Give reasons. (a) What is an excellent coolant. (b) Mercury is used in a thermometer. (c) A bimetallic strip is used in electrical gadgets. (d) An iron tyre is heated before fitting it on a wheel.

Answer»

Give reasons.



(a) What is an excellent coolant.



(b) Mercury is used in a thermometer.



(c) A bimetallic strip is used in electrical gadgets.



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



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