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ICSE Class 9 Study of Gas Laws — practice questions

Explore 28 free Study of Gas Laws questions in ICSE Class 9 Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Study of Gas Laws questions and exercises with answers

Showing questions 1–28 of 28.

According to Boyle's law, at constant temperature, gas pressure and volume:Read the answer and worked solution →How is Boyle's law expressed when comparing two states of a gas sample?Read the answer and worked solution →At constant temperature, when the volume of a gas is halved, pressure:Read the answer and worked solution →In which year did Robert Boyle publish his original gas law?Read the answer and worked solution →Which French scientist discovered Boyle's law independently in 1679?Read the answer and worked solution →Charles's law describes the volume-temperature relationship at constant:Read the answer and worked solution →Which mathematical formula expresses Charles's law for two states?Read the answer and worked solution →When the absolute temperature of a gas rises at constant pressure, volume:Read the answer and worked solution →By what fraction of its volume at 0 °C does gas expand for each 1 °C rise?Read the answer and worked solution →At which Celsius temperature would the volume of an ideal gas reach zero?Read the answer and worked solution →Who first proposed the concept of absolute zero temperature in 1848?Read the answer and worked solution →At absolute zero temperature, how do gas molecules behave?Read the answer and worked solution →Laws describing gas behaviour under pressure, volume and temperature are:Read the answer and worked solution →According to kinetic theory, decreasing gas volume raises pressure because:Read the answer and worked solution →Gay-Lussac's pressure law was established in which year?Read the answer and worked solution →At constant volume, the pressure of a given mass of gas is related to T by:Read the answer and worked solution →What is the approximate molar volume occupied by an ideal gas at STP?Read the answer and worked solution →Avogadro's law directly relates the volume of a gas to its:Read the answer and worked solution →Which equation represents the combined gas law for a fixed mass of gas?Read the answer and worked solution →What is the approximate numerical value of the universal gas constant R?Read the answer and worked solution →The ideal gas equation relating pressure, volume, and temperature is:Read the answer and worked solution →Under which conditions do real gases behave most like an ideal gas?Read the answer and worked solution →The total pressure of a gas mixture is the sum of its partial pressures by:Read the answer and worked solution →According to Graham's law, diffusion rate of a gas is proportional to:Read the answer and worked solution →Match each gas law with its mathematical relationship:Read the answer and worked solution →Match each thermodynamic temperature concept with its scientific value:Read the answer and worked solution →Match each kinetic theory postulate of gases with its assumption:Read the answer and worked solution →Match each daily phenomenon with the gas law explaining it:Read the answer and worked solution →

Worked practice questions

According to Boyle's law, at constant temperature, gas pressure and volume:

  1. Are inversely related
  2. Are directly related
  3. Remain strictly equal
  4. Grow exponentially
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Correct answer: A. Are inversely related

Boyle's law states that the pressure of a fixed mass of gas is inversely proportional to its volume at constant temperature.

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How is Boyle's law expressed when comparing two states of a gas sample?

  1. V1 / T1 = V2 / T2
  2. P1 V1 = P2 V2
  3. P1 / T1 = P2 / T2
  4. P1 V1 T1 = P2 V2 T2
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Correct answer: B. P1 V1 = P2 V2

For a fixed mass of gas at constant temperature, the product of pressure and volume remains constant.

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At constant temperature, when the volume of a gas is halved, pressure:

  1. Drops by one half
  2. Remains unchanged
  3. Becomes doubled
  4. Becomes quadrupled
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Correct answer: C. Becomes doubled

Because pressure and volume are inversely proportional at constant temperature, halving the volume doubles the pressure.

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