7th Class Science Heat Question Bank Heat

  • question_answer
    DIRECTIONS: Read the passage given below and answer the questions that follow. Passage - 1 A clinical thermometer is used to measure the body temperature of human beings. It consists of a long, narrow, uniform glass tube. It has a bulb at one end. The bulb contains mercury. This thermometer read temperatures from \[35{}^\circ C\] to\[42{}^\circ C\]. What for is a clinical thermometer provided with a kink?

    A) To keep the mercury within the range of \[35{}^\circ C\]-\[42{}^\circ C\]

    B) To allow the temperature reading to remain unchanged after the use of temperature until a jerk is given.

    C) To make the thermometer size smaller.

    D) All of the above are correct.

    Correct Answer: B

    Solution :

    To allow the temperature reading to remain unchanged after the use of temperature until a jerk is given.


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