Let's Check Your Knowledge Of Properties Of Gas...

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| By Jtdavesir
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Gas Quizzes & Trivia

Take this test to test your knowledge of the topic - properties of gas. If your score is not upto the mark then work hard and prepare the topic well.


Questions and Answers
  • 1. 

    The perfect example of an ideal gas is

    • A.

      Air

    • B.

      Hydrogen

    • C.

      Water vapor

    • D.

      None of the above

    Correct Answer
    D. None of the above
    Explanation
    None of the options provided (air, hydrogen, water vapor) can be considered as a perfect example of an ideal gas. An ideal gas is a theoretical concept that follows certain assumptions, such as having particles with negligible volume and no intermolecular forces. While air, hydrogen, and water vapor exhibit gas-like behavior, they deviate from the ideal gas behavior to some extent due to factors like intermolecular forces and non-negligible particle volume. Therefore, none of the given options can be considered a perfect example of an ideal gas.

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  • 2. 

    What is an ideal gas?

    • A.

      Which obeys the law pv = RT

    • B.

      Which obeys the law p = vR / T

    • C.

      Which obeys the law pv = R / T

    • D.

      None of the above

    Correct Answer
    A. Which obeys the law pv = RT
    Explanation
    An ideal gas is a theoretical concept in physics and chemistry that follows the ideal gas law, which states that the product of pressure (p) and volume (v) is directly proportional to the product of the number of moles of gas (n) and the temperature (T), represented by the gas constant (R). The equation pv = RT is a representation of this law, where p is the pressure, v is the volume, R is the gas constant, and T is the temperature. Therefore, the correct answer is "which obeys the law pv = RT."

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  • 3. 

    According to the Avogadro's law, what is the relation between volume of 1 kg mol of oxygen and volume of 1 kg mol of nitrogen, at normal pressure and temperature? (Mass of 1 kg mol of oxygen is 32 kg and mass of 1 kg mol of nitrogen is 28 kg)

    • A.

      Volume of 1 kg mol of oxygen is greater than that of nitrogen

    • B.

      Volume of 1 kg mol of oxygen is less than that of nitrogen

    • C.

      Volume of 1 kg mol of oxygen is same as that of nitrogen

    • D.

      None of the above

    Correct Answer
    C. Volume of 1 kg mol of oxygen is same as that of nitrogen
    Explanation
    According to Avogadro's law, equal volumes of gases at the same temperature and pressure contain the same number of molecules. Since both oxygen and nitrogen have the same number of moles (1 kg mol) and are at the same temperature and pressure, their volumes will be the same. Therefore, the correct answer is that the volume of 1 kg mol of oxygen is the same as that of nitrogen.

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  • 4. 

     In which condition can real gas closely obey the ideal gas equation?

    • A.

      Pressure is very small and temperature is very high

    • B.

      Pressure is very high and temperature is very low

    • C.

      Both pressure and temperature are very high

    • D.

      Both pressure and temperature are very low

    Correct Answer
    A. Pressure is very small and temperature is very high
    Explanation
    Real gases closely obey the ideal gas equation when the pressure is very small and the temperature is very high. At low pressures, the intermolecular forces between gas molecules become negligible, allowing the gas to behave more like an ideal gas. Additionally, at high temperatures, the kinetic energy of the gas molecules increases, causing them to move more rapidly and collide with each other less frequently. This combination of low pressure and high temperature reduces the effects of intermolecular forces and allows the gas to closely follow the ideal gas equation.

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  • 5. 

    The volume occupied by one number of unit mol of gas is called as

    • A.

      molecular volume

    • B.

      Mol volume

    • C.

      Molar volume

    • D.

      None of the above

    Correct Answer
    C. Molar volume
    Explanation
    The term "molar volume" refers to the volume occupied by one mole of a gas at a specific temperature and pressure. It is a measure of the amount of space that one mole of gas particles occupies. The molar volume is a useful concept in chemistry as it allows for easy comparison of gas volumes and is often used in stoichiometric calculations and the ideal gas law.

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  • 6. 

    What is the volume of a gram mole of hydrogen at 760 mm Hg and 0 °C ?

    • A.

      22.4 cm3

    • B.

      22.4 liters

    • C.

      22.4 m3

    • D.

      None of the above

    Correct Answer
    B. 22.4 liters
    Explanation
    At standard temperature and pressure (STP), which is 0 °C and 760 mm Hg, one mole of any ideal gas occupies a volume of 22.4 liters. Therefore, the correct answer is 22.4 liters.

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  • 7. 

    What is a mole of a substance?

    • A.

      One mole has a mass numerically equal to half the molecular weight of the substance

    • B.

      One mole has a mass numerically equal to the molecular weight of the substance

    • C.

      One mole has a mass numerically equal to double the molecular weight of the substance

    • D.

      none of the above

    Correct Answer
    B. One mole has a mass numerically equal to the molecular weight of the substance
    Explanation
    One mole of a substance is defined as the amount of that substance that contains the same number of particles (atoms, molecules, or ions) as there are atoms in exactly 12 grams of carbon-12. The mass of one mole of a substance is numerically equal to its molecular weight (or molar mass) in grams. Therefore, the correct answer is "One mole has a mass numerically equal to the molecular weight of the substance."

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  • Current Version
  • Mar 20, 2023
    Quiz Edited by
    ProProfs Editorial Team
  • Oct 28, 2018
    Quiz Created by
    Jtdavesir
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