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Some steam at 100oC is passed into 1.1 kg of water contained in a calorimeter of water equivalent 0.02 kg at 15oC so that the temperature of the calorimeter and its contents rises to 80oC. Then the mass of steam condensed (in kg) is 

a
0.130
b
0.065
c
0.260
d
0.460

detailed solution

Correct option is A

m×540+m×1×(100−80)=(1.1+0.02)×103×1×(80−15)⇒ m=0.13 kg

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