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School Physics Quiz : Heat


Answer the following questions based on heat.

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Multiple choice

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1.

Given that 1 cal (about 4.2 J) of heat is required to raise the temperature of 1 g of water by 1oC, what will be the final temperature when 25.0 calories of heat are added to 2 g of water at 26oC ?

  23.0oC

  38.5oC

  29.0oC

  13.5oC

  Half-n-half Clue
 

2.

Given that 1 cal (about 4.2 J) of heat is lost by 1 g of water in cooling by 1oC, how much heat is lost by 3 g of water in cooling from 75oC to 15oC ?

  180.0 J

  252.0 J

  12.6 J

  756.0 J

  Half-n-half Clue
 

3.

The calorific value of a fuel is the quantity of heat produced when a unit _______ of it is burnt.

  weight

  mass

  volume

  Half-n-half Clue
 

4.

Given that 1 cal (about 4.2 J) of heat is required to raise the temperature of 1 g of water by 1oC, how much heat is required to raise the temperature of 3 g of water by 8oC?

  33.6 J

  24.0 J

  12.6 J

  100.8 J

  Half-n-half Clue
 

5.

_______ have the highest calorific value.

  Vitamins

  Proteins

  Carbohydrates

  Fats

  Sugars

  Half-n-half Clue
 

6.

The SI unit of heat (thermal energy) is

  Watt

  Joule

  Pascal

  Newton

  Half-n-half Clue
 

7.

A mass of 50 kg falls 80m. If all its potential energy is converted to heat and gravitational acceleration = 9.8 m/s2, then the heat gained is

  784 J

  4000 J

  490 J

  39200 J

  Half-n-half Clue
 


 
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