English
Tamil Nadu Board of Secondary EducationSSLC (English Medium) Class 8

Define specific heat capacity.

Advertisements
Advertisements

Question

Define specific heat capacity.

Short/Brief Note
Advertisements

Solution

The specific heat capacity of a substance is defined as the amount of heat energy required to raise the temperature of 1 kilogram of a substance by 1°C or 1 K. It is denoted by the symbol C.

shaalaa.com
  Is there an error in this question or solution?
Chapter 4: Heat - Exercises [Page 44]

APPEARS IN

Samacheer Kalvi Science [English] Class 8 TN Board
Chapter 4 Heat
Exercises | Q VI. 6. | Page 44

RELATED QUESTIONS

Define heat capacity and state its SI unit.


A solid of mass 50 g at 150 °C is placed in 100 g of water at 11 °C when the final temperature recorded is 20 °C. Find the specific heat capacity of the solid. (specific heat capacity of water = 4.2 J/g °C)


50 g of metal piece at 27°C requires 2400 J of heat energy so as to attain a temperature of 327°C . Calculate the specific heat capacity of the metal.


Explain the term boiling ?


Ice cream appears colder to the mouth than water at 0℃. Give reason.


Give two reasons as to why copper is preferred over other metals for making calorimeters.


A vessel of negligible heat*capacity contains 40g of ice in it at 0°C, 8g of steam at 100°C is passed into the ice to melt it. Find the final temperature of the contents of the vessel.
(Specific latent heat of vaporization of steam = 2268 J/g, specific latent heat of fusion of ice = 336 J/f and specific heat capacity of water = 4.2 J/g°C)


Read the passage and answer the questions based on it.

If heat is exchanged between a hot and cold object, the temperature of the cold object goes on increasing due to gain of energy and the temperature of the hot object goes on decreasing due to loss of energy. The change in temperature continues till the temperatures of both objects attain the same value. In this process, the cold object gains heat energy and the hot object loses heat energy. If the system of both the objects is isolated from the environment by keeping it inside a heat-resistant box then no energy can flow from inside the box or come into the box. In this situation, we get the following principle.
Heat energy lost by the hot object = Heat energy gained by the cold object. This is called the ‘Principle of heat exchange’.

  1. Where does heat transfer take place?
  2. In such a situation which principle of heat do you perceive?
  3. How can this principle be explained in short?
  4. Which property of the substance is measured using this principle?

At same temperature and pressure of an ideal gas, ____________.


Two metals A and B have specific heat capacities in the ratio 2:3. If they are supplied same amount of heat then

If specific heat capacity of metal A is 0.26 Jg-1 0C-1 then calculate the specific heat capacity of metal B.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×