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Certain quantity of water cools from 70^...

Certain quantity of water cools from `70^(@)C` to `60^(@)C` in the first `5` minutes and to `54^(@)C` in the next `5` minutes. The temperature of the surrounding is

A

`45^@C`

B

`20^@C`

C

`44.0 j//s`

D

`16.8 j//s`

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The correct Answer is:
A
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