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Boyle law: percentage change in volume or pressure at constant temperature

This type of question, asked 6 times: 16 May 2023 S2, 14 May 2024 S2, 23 Apr 2025 S1, 25 Apr 2025 S1, 12 May 2026 S1, 14 May 2026 S2. All 6 questions below, oldest first.

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  1. Question 1

    16 May 2023 S2

    29
    Temperature remaining constant, the pressure of gas is decreased by 20%. The percentage change in volume

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  2. Question 2

    14 May 2024 S2

    11
    At constant temperature, increasing the pressure of a gas by 5% its volume will decrease by

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  3. Question 3

    23 Apr 2025 S1

    12
    How much should the pressure be increased in order to reduce the volume of a given mass of gas by 5%5\% at the constant temperature?

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  4. Question 4

    25 Apr 2025 S1

    40
    The volume of given mass of a gas is increased by 7%7\% at constant temperature. The pressure should be increased by

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  5. Question 5

    12 May 2026 S1

    117
    The pressure of a given mass of a gas is decreased by 20 %20\ \% at constant temperature, then its volume will

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  6. Question 6

    14 May 2026 S2

    116
    At constant temperature, the volume of a gas is to be decreased by 4%. The pressure must be increased by

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