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Question

For a 5 gm substance the heat supplied (in cals.) and temperature (in C) curve is given below. Then the specific heat of substance for liquid state will be :
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A
1cal/gmC
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B
0.2cal/(gmC
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C
2.5cal/gmC
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D
Can't be obtain
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Solution

The correct option is B 0.2cal/(gmC
Specific heat= 100cal(5g)(100oC)=0.2cal/goC
Energy= 220-120= 100 cal
δ(T)=1000=100oC
m= 5g

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