English

(i) Define Calorimetry. (ii) Name the material used for making a Calorimeter. (iii) Why is a Calorimeter made up of thin sheets of the above material answered in ii. - Physics

Advertisements
Advertisements

Question

  1. Define Calorimetry.
  2. Name the material used for making a Calorimeter.
  3. Why is a Calorimeter made up of thin sheets of the above material answered in ii.
Short Note

Solution

  1. Calorimetry is the science associated with determining the changes in energy of a system by measuring the heat exchanged with the surroundings.
  2. Copper, wood
  3. To avoid any heat, utilise making the temperature of the sheet going up.
shaalaa.com
  Is there an error in this question or solution?
2018-2019 (March) Set 1

RELATED QUESTIONS

What is the principle of Calorimetry?


How can a temperature in degree Celsius be converted into S.I. unit of temperature?


A piece of iron of mass 2.0 kg has a heat capacity of 966 J K-1. Find heat energy needed to warm it by 15°C.


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? Specific heat capacity of squash = 4200 J g−1K−1.


1 kg of ice at 0°C is heated at a constant rate and its temperature is recorded after every 30 s till steam is formed at 100℃. Draw a temperature time graph to represent the change of phase.


The melting point of naphthalene, a crystalline solid is 80℃ and the room temperature is 30℃. A sample of liquid naphthalene at 100℃ is cooled down to the room temperature. Draw a temperature time graph to represent this cooling.


Find the result of mixing 10 g of ice at - 10℃ with 10 g of water at 10℃. Specific heat capacity of ice = 2.1 J kg-1 K-1, Specific latent heat of ice = 336 J g-1 and specific heat capacity of water = 4.2 J kg-1 K-1.


Give scientific reasons for the following:

Bottled drinks are cooled more effectively when surrounded by lumps of ice than by cold water at 0°.


A bucket contains 10 liters of water at 80°C. Cold water at 25°C is run from a tap into the bucket of hot water for 20 seconds and the temp. Of the water in the bucket falls to 50°C.
(a) Calculate the rate at which cold water came out of the tap.
(b) State an assumption made in the above calculation.


The process of converting a substance from solid state to gaseous state is called condensation.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×