मराठी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान इयत्ता ११

The Specific Heat Capacity of a Body Depends on

Advertisements
Advertisements

प्रश्न

The specific heat capacity of a body depends on _____________ .

पर्याय

  • the heat given

  • the temperature raised

  • the mass of the body

  • the material of the body

MCQ
रिकाम्या जागा भरा
Advertisements

उत्तर

the material of the body

 

Heat capacity of a body is due to their material properties. Due to different molecular structures, different bodies have a different capacity to absorb heat. Therefore, specific heat of a body depends on the material of the body.

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 25: Calorimetry - MCQ [पृष्ठ ४६]

APPEARS IN

एचसी वर्मा Concepts of Physics Volume 1 and 2 [English]
पाठ 25 Calorimetry
MCQ | Q 1 | पृष्ठ ४६

संबंधित प्रश्‍न

The coolant in a chemical or a nuclear plant (i.e., the liquid used to prevent the different parts of a plant from getting too hot) should have high specific heat.


Calculate the mass of ice needed to cool 150 g of water contained in a calorimeter of mass 50 g at 32 °C such that the final temperature is 5 °C. Specific heat capacity of calorimeter = 0.4 J g-1 °C-1, Specific heat capacity of water = 4.2 J g-1°C-1, latent heat capacity of ice = 330 J g-1.


What do you understand by the following statements:

The heat capacity of the body is 60JK-1.


A refrigerator converts 100 g of water at 20°C to ice at -10°C in 35 minutes. Calculate the average rate of heat extraction in terms of watts.

Given: Specific heat capacity of ice = 2.1 J g-1°C-1

Specific heat capacity of water = 4.2 J g-1°C-1

Specific latent heat of fusion of ice = 336 J g-1


A liquid X has the maximum specific heat capacity and is used as a coolant in Car Radiators. Name the liquid X.


Heat supplied to a solid change it into liquid. What is this change in the phase called?


The temperature of 170 g of water at 50°C is lowered to 5°C by adding a certain amount of ice to it. Find the mass of ice added.

Given: Specific heat capacity of water = 4200 J kg-1 °C-1 and specific latent heat of ice = 336000 J kg-1.


What do you mean by the following statement?

The heat capacity of a body is 50 JK-1?


Discuss the role of high specific heat capacity of water with reference to climate in coastal areas.


How will rise in sea level affect population in coastal countries?


What impact will global warming have on the health of the affected population?


The specific heat of body is 0.2 cal g-1 °C-1. What is the meaning of this statement?

State, with reason, which of the two, boiling water or steam both at 100°C will produce more severe burns.


A liquid X has specific heat capacity higher than the liquid Y. Which liquid is useful as heat reservoir to keep juice bottles without freezing?


Write two advantages of high specific heat capacity of water.


The farmers fill their fields with water in winter. Give reason.


A certain amount of heat Q will warm 1 g of material X by 3°C and 1 g of material Y by 4°C. Which material has a higher specific heat capacity?


A substance is in the form of a solid at 0°C. The amount of heat added to this substance and the temperature of the substance are plotted on the following graph:

If the specific heat capacity of the solid substance is 500 J/kg °G, find from the graph, the mass of the substance.


The temperature of a lead piece of mass 400 g rises from 20°C to 50°C when 1560 J of heat is supplied to it. Calculate: Heat capacity of lead piece.


Solve the following problem.

What is the specific heat of metal if 50 cal of heat is needed to raise 6 kg of the metal from 20°C to 62 °C?


The SI unit of specific heat is _______.


Write a short note.

Specific heat capacity


The cold object the hot object enclosed in one box of heat-resistant material.

  1. What changes will occur in the two objects when temperature flows from those objects?
  2. Which principle can show that the energy exchange takes place between two objects only when kept in isolated system?

The heat capacity of the vessel of mass 100 kg is 8000 J/°K. Find its specific heat capacity.


Numerical Problem.

What could be the final temperature of a mixture of 100 g of water at 90 °C and 600g of water at 20°C.


Express the change in internal energy in terms of molar specific heat capacity.


If 'Cp' and 'Cv' are molar specific heats of an ideal gas at constant pressure and volume respectively. If 'λ' is the ratio of two specific heats and 'R' is universal gas constant then 'Cp' is equal to ______.


For a gas `"R"/"C"_"v" = 0.4,` where 'R' is the universal gas constant and 'Cv' is molar specific heat at constant volume. The gas is made up of molecules which are ______.


The diagram below shows a cooling curve for 200 g of water. The heat is extracted at the rate of 100 Js-1. Answer the questions that follow:

  1. Calculate specific heat capacity of water.
  2. Heat released in the region BC.

Why is water used as a coolant in radiators of a car?


Match the following

1. Specific heat capacity a. Dewar bottle
2. Calorimeter b. Lavoisier and Simon
3. Vacuum flask c. J Kg-1 K-1
4. Ice – calorimeter d. Heat capacity

The specific heat capacity of water is ______.


The difference between the two molar specific heats of gas is 9000 J/kg K. If the ratio of the two specific heats is 1.5, calculate the two molar specific heats.


Prove the Mayer's relation `C_p - C _v = R/J`


Two blocks P and Q of different metals having their mass in the ratio 2 : 1 are given same amount of heat. Their temperature rises by same amount. Compare their specific heat capacities.


Give one example where high specific heat capacity of water is used as heat reservoir.


Which method is used to determine the specific heat capacity of both solids and liquids by mixing a substance of unknown specific heat with water?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×