NEET Physics Mechanical Properties Of Fluids Calorimetry MCQs

A metal block of mass 2 kg and specific heat 0.2 cal/g°C at 100°C is dropped into 100 g of water at 25°C. The final temperature of the system is 30°C. What is the heat lost by the metal block (in calories)?

Two liquids A and B, each of mass 100 g and specific heat capacities 2 cal/g°C and 1 cal/g°C respectively, are mixed. Initially, A is at 60°C and B is at 20°C. Assuming no heat loss to the surroundings, what is the final temperature of the mixture?

A calorimeter of water equivalent 5 g contains 50 g of water at 20°C. 10 g of ice at 0°C is added to the water. The final temperature of the mixture after all the ice has melted is (Latent heat of fusion of ice = 80 cal/g):

Which of the following is the correct unit for heat capacity?

50g of water at 80°C is mixed with 50g of water at 20°C in a calorimeter of negligible heat capacity. The final temperature of the mixture will be:

If equal masses of two substances, with specific heats $c_1$ and $c_2$ and initial temperatures $T_1$ and $T_2$ respectively ($T_1 > T_2$), are mixed, the final temperature of the mixture, assuming no heat loss, is given by:

Two identical calorimeters, A and B, contain equal masses of water at $20^\circ C$. A $50g$ block of copper at $100^\circ C$ is dropped into A, and a $50g$ block of an unknown metal at $100^\circ C$ is dropped into B. The equilibrium temperature in A is $25^\circ C$ and in B is $22^\circ C$. Assuming no heat loss to the surroundings, the specific heat capacity of the unknown metal (in $J/g^\circ C$) is closest to:

A calorimeter of negligible heat capacity contains $100g$ of ice at $0^\circ C$. $10g$ of steam at $100^\circ C$ is passed into the calorimeter. The final temperature of the calorimeter and its contents will be closest to (Latent heat of fusion of ice = $336 J/g$, Latent heat of vaporization of water = $2260 J/g$, Specific heat of water = $4.2 J/g^\circ C$):

A metal block of mass $m$ and specific heat $c$ is heated to a temperature $T$ and then immersed in a liquid of mass $2m$ and specific heat $2c$ at a temperature $T/2$. If there is no heat loss to the surroundings, the final temperature of the mixture will be:

Two liquids A and B have specific heats $c_A$ and $c_B$ respectively, where $c_A = 2c_B$. Equal masses of A and B are mixed together. Initially, A is at a temperature $T_A$ and B is at a temperature $T_B$, with $T_A > T_B$. Assuming no heat loss to the surroundings, the final temperature of the mixture ($T_f$) is given by: