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BCECE Engineering BCECE Engineering Solved Paper-2003

  • question_answer
    A gas in an air tight container is heated from \[25{}^\circ C\] to \[90{}^\circ C\]. The density of gas will:

    A)  increase slightly

    B)         remain the same

    C)         increase considerably

    D)         decrease slightly

    Correct Answer: D

    Solution :

    When the temperature increases, the volume of container rises slightly due to thermal expansion but mass of the gas remains the same. Hence, the \[\text{density}\,\text{=}\,\,\,\left( \frac{\text{mass}}{\text{volume}} \right)\]of the gas decreases slightly.


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