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JEE MAIN 2019
10-01-2019 S2
Question
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 J $\left.\mathrm{kg}^{-1} \mathrm{~K}^{-1}\right)$
Select the correct option:
A
$916 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$
B
$1232 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$
C
$654 \mathrm{~J} \mathrm{~kg}^{-1} \mathrm{~K}^{-1}$
D
$458 \mathrm{~J} \mathrm{kq}^{-1} \mathrm{~K}^{-1}$
✓ Correct! Well done.
✗ Incorrect. Try again or view the solution.
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