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Heat Test - 21...

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  • Question 1
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    When you approach fire, you feel heat on your body. Which of the following mode of heat transfer is involved in this ?

  • Question 2
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    Which of the following is an example of convection? 

  • Question 3
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    Directions For Questions

    In above shown figure, a candle is burning inside the metal box. The heat transfer between box and its surrounding can be by three types of heat transfer.
    I. radiation
    II. conduction
    III. convection

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    If you touch the outside surface of the metal container, your hand will become warmer directly by which of the above choices? 

  • Question 4
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    As the air around the base of a candle flame is heated, it rises and is replaced by cooler air due to which of following type of heat transfer?

  • Question 5
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    In conductors, outer electrons :

  • Question 6
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    Overhead cables are insulated from pylons through

  • Question 7
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    Which of the following is a good conductor of heat?

  • Question 8
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    Using a heating blanket to get warm is an example of-

  • Question 9
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    The heat transfer in air is poor because

  • Question 10
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    Air is a bad conductor of heat because:

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