An unknown metal of mass 192 g heated to a temperature of 100° C was immersed into a brass calorimeter of mass 128 g containing 240 g of water at a temperature of 8.4° C. Calculate the specific heat of the unknown metal if water temperature stabilizes at 21.5°C. (Specific heat of brass is 394 
).
A
458 
B
1232 
C
916 
D
654 
Text Solution
Verified by ExpertsThe correct answer is:
C
JEE Main 2019
Let specific heat of unknown metal be ‘s’.
According to principle of calorimetry, Heat lost = Heat gain 
Solving we get, 
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