7th Class Science Heat Question Bank Heat

  • question_answer
    Read the given statements and select the correct option.
    Statement 1: An iron ball at \[{{35}^{o}}C\]is dropped in a mug containing water at\[305.15\text{ }K\]. Then the heat will flow from the water to the iron ball.
    Statement 2: In convection, heated molecules of a liquid themselves move to carry heat from the hot region to the cold region,                                     

    A) Both statements 1 and 2 are true and statement 2 is the correct explanation of statement 1.

    B) Both statements 1 and 2 are true and statement 2 is not the correct explanation of statement 1.

    C) Statement 1 is true but statement 2 is false.

    D) Statement 1 is false and statement 2 is true.

    Correct Answer: D

    Solution :

    \[{{35}^{o}}C\]is equivalent to (273.15 + 35) 308.15 K. So iron ball is at higher temperature and heat will flow from iron ball to the water.


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