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B
420Jg−1K−1
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C
0.42Jg−1K−1
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D
4.2Jkg−1K−1
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Solution
The correct option is A4200Jkg−1K−1 The specific heat capacity of a substance is the heat needed to raise the temperature of 1kg of the substance by 1K (or by 1oC). The specific heat capacity of water is 4200Jkg−1K−1.