Elasticity, Thermal Expansion, Calorimetry and Heat Transfer: Calorimetry Principle MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

Practice and revisionDetailed answer reviewMobile-friendly flow

Calorimetry PrincipleHardQuestion 30851

Question

10 g of ice at 0°C is mixed with 10 g of water at 100°C. Final state is (L_ice = 336 J/g, c_water = 4.2 J/g·°C):

A
All water at 10°C
Correct
B
All water at 0°C
C
Ice and water at 0°C
D
All water at about 62°C

Correct answer

All water at 10°C

Explanation

The hot water releases 4200 J on cooling to 0°C. Melting the ice uses 3360 J, leaving 840 J to heat 20 g of water. Thus $ΔT=840/(20×4.2)=10°C$ , so the final state is all water at 10°C.

Review Elasticity, Thermal Expansion, Calorimetry and Heat Transfer notes Start timed chapter practice