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Heat Test - 7...

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  • Question 1
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    The freezing point of water on a thermometer is 30o and the boiling point is 150o. For 40oC, what will be the reading in the thermometer?

  • Question 2
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    A and B are two objects. The temperature of A is greater than that of B. This means that

  • Question 3
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    The temperature at which Celsius and Fahrenheit scales will show the same reading is

  • Question 4
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    Two spheres of the same size are made of the same metal, but one is hollow and the other is solid. They are heated to the same temperature. What will happen?

  • Question 5
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    Water at 0oC heats up to 3oC. Its volume will

  • Question 6
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    Which of the following curves best represents the variation of density of water with temperature?

  • Question 7
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    In a car, radiator and fan are used to cool the engine. The heat transfer modes involved are

  • Question 8
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    A person takes hot tea by pouring it into the saucer (plate) when one is in a hurry because he knows that

  • Question 9
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    The quantity of heat, which crosses unit area of a metal plate during conduction, depends upon

  • Question 10
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    Heat is flowing through two cylindrical rods of the same material. The diameters of the rods are in the ratio 1 : 2, and their lengths are in the ratio 2 : 1. If the temperature difference between their ends is the same, then the ratio of the amounts of heat conducted through them per unit time will be

  • Question 11
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    Which of the following correctly defines the water equivalent of a body?

  • Question 12
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    50 g of ice at 0oC is mixed with 50 g of water at 20oC. The final temperature of the mixture will be

  • Question 13
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    Which of the following has the highest specific heat?

  • Question 14
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    When a body is heated, its temperature will rise if the body

  • Question 15
    1 / -0

    Two blocks of ice when pressed together join to form one block of ice because

  • Question 16
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    A source of heat supplies heat at a constant rate to a substance. The given figure shows the variation of temperature of the substance with the heat supplied. The slope of segment DE represents

  • Question 17
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    A closed vessel is maintained at a constant temperature. It is first evacuated, and then vapour is injected into it continuously. The pressure of the vapours in the vessel

  • Question 18
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    The door of a running refrigerator inside a closed room was left open. Which of the following observations will be seen?

  • Question 19
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    The highest temperature reached inside a pressure cooker will depend upon

  • Question 20
    1 / -0

    What happens when vapour condenses into liquid?

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