High School Physics

# calorimetry numerical

## 1.0 kg of water is contained in a 1.25 kW kettle. Calculate the time taken for the temperature of water to rise from 25° C to its boiling point 100° C.

Calorimetry Numerical Question: 13 [ Reference: Selina Class 10 ICSE physics book exercise] 1.0 kg of water is contained in a 1.25 kW kettle. Calculate the time taken for the temperature of water to rise from 25° C to its boiling point 100° C. Specific heat capacity of water = 4.2 J g-1 K-1. Solution: Specific […]

## The temperature of 600 g of cold water rises by 15 C when 300 g of hot water at 50 C is added to it. What was the initial temperature of the cold water?

Calorimetry numerical Question: 12 [Reference Selina ICSE class 10 book exercise] The temperature of 600 g of cold water rises by 15o C when 300 g of hot water at 50o C is added to it. What was the initial temperature of the cold water? Solution: Mass of hot water (m1) = 300 g Initial Temperature of […]

## 200 g of hot water at 80 C is added to 300 g of cold water at 10 C. calculate the final temperature of the mixture of water.

Calorimetry numerical Question: 11 [reference: Selina class 10 ICSE book exercise] 200 g of hot water at 80o C is added to 300 g of cold water at 10oC. Neglecting the heat taken by the container, calculate the final temperature of the mixture of water. Specific heat capacity of water = 4200 J kg-1 K-1. Solution: Mass […]

## Calorimetry Numericals class 10

In this post and its supporting posts, we will solve a set of Calorimetry Numericals for class 10. The problems are taken from Selina’s ICSE Class 10 Physics book. The solution link after each problem will lead you to the solution to the problem in a new tab of your browser.

## 45 g of water at 50o C in a beaker is cooled when 50 g of copper at 18 C is added to it. The contents are stirred till a final constant temperature is reached. Calculate the final temperature.

Calorimetry Numerical Question: 10 [from Selina ICSE class 10 Physics book exercise] 45 g of water at 50o C in a beaker is cooled when 50 g of copper at 18oC is added to it. The contents are stirred till a final constant temperature is reached. Calculate the final temperature. The specific heat capacity of copper […]

## A mass of 50 g of a certain metal at 150° C is immersed in 100 g of water at 11° C. The final temperature is 20° C. Calculate the specific heat capacity of the metal.

Calorimetry numerical Question: 9 [reference: Selina ICSE class 10 Physics] A mass of 50 g of a certain metal at 150° C is immersed in 100 g of water at 11° C. The final temperature is 20° C. Calculate the specific heat capacity of the metal. Assume that the specific heat capacity of water is 4.2 J g-1 K-1. […]

## 0.5 kg of lemon squash at 30 C is placed in a refrigerator which can remove heat at an average rate of 30 J s-1. How long will it take to cool the lemon squash to 5 C?

Calorimetry Numerical Question: 8 [reference: Selina ICSE class 10 Physics] 0.5 kg of lemon squash at 30o C is placed in a refrigerator which can remove heat at an average rate of 30 J s-1. How long will it take to cool the lemon squash to 5o C? Specific heat capacity of squash = 4200 J kg-1 K-1. […]

## An electric heater of power 600 W raises the temperature of 4.0 kg of a liquid from 10 C to 15 C in 100 s. Calculate: (i) the heat capacity of 4.0 kg of liquid

Calorimetry numerical Question: 7 [reference: Selina class 10 ICSE Physics] An electric heater of power 600 W raises the temperature of 4.0 kg of a liquid from 10.00C to 15.00C in 100 s. Calculate:(i) the heat capacity of 4.0 kg of liquid, and (ii) the specific heat capacity of liquid Solution: Power of heater P […]

## Find the time taken by a 500 W  heater to raise the temperature of 50 kg of material of specific heat capacity 960 J kg-1 K-1, from 18 C to 38 C.

Calorimetry numerical Question: 6 [ref: Selina ICSE class 10] Find the time taken by a 500 W  heater to raise the temperature of 50 kg of material of specific heat capacity 960 J kg-1 K-1, from 18oC to 38oC. Assume that all the heat energy supplied by heater is given to the material. Solution: Specific heat […]

## 1300 J of heat energy is supplied to raise the temperature of 0.5 kg of lead from 20 C to 40 C. Calculate the specific heat capacity of lead.

Calorimetry Numerical Question: 5 1300 J of heat energy is supplied to raise the temperature of 0.5 kg of lead from 20oC to 40oC. Calculate the specific heat capacity of lead. Solution: Given Heat energy supplied = 1300 J Mass of lead = 0.5 kg Change in temperature = (40 – 20)0 C = 200 C = […]

## Calculate the amount of heat energy required to raise the temperature of 100 g of copper from 20 degree C to 70 degree C. Specific heat capacity of copper =390 J kg-1 K-1.

Question: 4 Calculate the amount of heat energy required to raise the temperature of 100 g of copper from 20oC to 70oC. Specific heat capacity of copper =390 J kg-1 K-1. Solution: Given Mass of copper m = 100 g = 0.1 kg Change of temperature △t = (70 – 20)0 C = 500 C = 50 K […]

## A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find (i) Heat energy needed to warm it by 15 degree C, and (ii) Its specific heat capacity in S.I unit.

Question: 3 A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find(i) Heat energy needed to warm it by 15oC, and(ii) Its specific heat capacity in S.I unit. Solution: (i) We know that, Heat energy needed to raise the temperature by 150 C = heat capacity × change in temperature Heat […]

## Calculate the heat capacity of a copper vessel of mass 150 g if the specific heat capacity of copper is 410 J kg-1 K-1.

Question: 2 (a)Calculate the heat capacity of a copper vessel of mass 150 g if the specific heat capacity of copper is 410 J kg-1 K-1. (b)How much heat energy will be required to increase the temperature of the vessel in part (a) from 25oC to 35oC? Solution: (a) Given Mass of copper vessel = 150 […]

## By imparting heat to a body, its temperature rises by 15 degree C. What is the corresponding rise in temperature on the Kelvin scale?

Question: 1 By imparting heat to a body, its temperature rises by 150C. What is the corresponding rise in temperature on the Kelvin scale? Solution: The size of 1 degree on the Kelvin scale is the same as the size of 1 degree on the Celsius scale. Hence, on both the Kelvin and Celsius scales […]

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