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Question

The temperature-time graph obtained when hot water is allowed to cool resembles the graph given in one of the following figures. The correct figure is :



(1) A
(2) B
(3) C
(4) D

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Solution

When hot water cools down, its temperature falls at a continuous rate but initially, its temperature falls at a higher rate and later the rate of fall of temperature starts decreasing. The only graph matching with this description is given in option 4.

Hence, the correct answer is option 4.

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