1.

The specific heat of a substance varies with temperature \[t({}^\circ Q)\]as \[c=0.20+0.14t+0.23{{t}^{2}}\](cal/g/ C) The heat required to raise the temperature of 2 g of substance from \[5{}^\circ C\]to \[15{}^\circ C\]will be

A. 24 cal
B. 56 cal
C. 82 cal
D. 100 cal
Answer» D. 100 cal


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