UPSC NDA I 2016 General Ability Solved Paper

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Question : 115 of 150

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Which one of the following statements with regard to expansion of materials due to heating is not correct?

[NDA I 2016]

As ice melts, it expands uniformly up to 4°C.
Mercury thermometer works using the principle of expansion due to heating.
Small gap is kept between two rails to allow for expansion due to heating.
The length of metallic wire increases when its temperature is increased.

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