JEE Main & Advanced
Physics
Thermometry, Calorimetry & Thermal Expansion
Question Bank
Calorimetry
question_answer
Calculate the amount of heat (in calories) required to convert 5 gm of ice at 0°C to steam at 100° [DPMT 2005]
A) 3100
B) 3200
C) 3600
D) 4200
Correct Answer:
C
Solution :
Ice (0°C) converts into steam (100°C) in following three steps. Total heat required \[Q={{Q}_{1}}+{{Q}_{2}}+{{Q}_{3}}\] \[=5\times 80+5\times 1\times (100-0)+5\times 540=3600\,cal\]