Home Physics Thermodynamics Statement Based Heat energy of 184 kJ is given to ice of mas…
Physics Thermodynamics Statement Based MCQ (Single Correct)

Heat energy of 184 kJ is given to ice of mass 600 g at -12°C, Specific heat of ice is 2222.3 J kg -10 C -1 and latent heat of ice in 336 kJ/kg -l

A
Final temperature of system will be 0°C. A and D only
B
Final temperature of the system will be greater than 0°C. B and D only A and E only
C
The final system will have a mixture of ice and water in the ratio of 5 : 1.
D
The final system will have a mixture of ice and water in the ratio of 1 : 5. (E) The final system will have water only. Choose the correct answer from the options given below: A and C only

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Text Solution

Verified by Experts
The correct answer is:
A

Q = 184x10 3

m = 0.600 kg at -12°C

S=222.3J/kg/ 0 C

L = 336x 10 3 J/kg

Q 1 = 0.600 x 22223 x 12 = 16000.56 J

Remaining heat Q 1 = 184000 - 16000.56

= 167999.44 J

For meeting at 0°C

Q 2 = 0.600 x 336000 = 201600 J needed

100% ice is not melted

Amount of ice melted

167999.44 = m x 336000 = 0.4999 kg

mass of water = 0.4999 kg

Mass of ice = 0.1001

Ratio =

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