## Ideal Gas Equation - MCQ - Basic Level

Physics is an important subject in preparation for various Competitive exams. To keep a track of your preparation we have designed a small quiz of Basic Level Questions on Ideal Gas Equation. You have 10 minutes to solve the quiz, click the start timer button in order to start the timer and then click on submit button at the end to submit the quiz and view your scores and correct answers.

Q1. In the realtion n = PV/RT, n =

•  Number of molecules
•  Atomic Number
•  Mass Number
•  Number of Moles

Number of Moles

Q2. A balloon contains of helium at 27°C and 4 atmospheric pressure. The volume of helium at –3°C temperature and 2 atmospheric pressure will be

•  1500m3
•  1700m3
•  1900m3
•  2700m3

2700m3

Q3. One litre of helium gas at a pressure 76 cm of Hg and temperature 27° is heated till its pressure and volume are doubled. The final temperature attained by the gas is

•  927 °C
•  900 °C
•  627 °C
•  327 °C

927 °C

Q4. The pressure and temperature of an ideal gas in a closed vessel are 720 kPa and 40°C respectively. If 1/4th of the gas is released from the vessel and the temperature of the remaining gas is raised to 353°C, the final pressure of the gas is

•  1440 kPa
•  1080 kPa
•  720 kPa
•  540 kPa

1080 kPa

Q5. A vessels is filled with an ideal gas at a pressure of 10 atmospheres and temperature 27°C. Half of the mass of the gas is removed from the vessel and temperature of the remaining gas is increased to 87°C. The pressure of the gas in the vessel will be

•  5 atm
•  6 atm
•  7 atm
•  8 atm

6 atm

Q6. S.I. unit of universal gas constant is

•  cal/ °C
•  J/mol
•  J mol-1 K-1
•  J/kg

J mol-1 K-1

Q7. The product of the pressure and volume of an ideal gas is

•  A constant
•  Approx. equal to the universal gas constant
•  Approx. equal to the universal gas constant
•  Inversely proportional to its temperature

Approx. equal to the universal gas constant

Q8. A sample of an ideal gas occupies a volume V at a pressure P and absolute temperature T, the mass of each molecule is m. The expression for the density of gas is

•  mKT
•  P/KT
•  P/KTV
•  Pm/KT

Pm/KT

Q9. The gas equation PV/T = constant is true for a constant mass of an ideal gas undergoing

•  Isothermal change
•  Isobaric Change
•  Any type of change

Any type of change

Q10. A box contains n molecules of a gas. How will the pressure of the gas be effected, if the number of molecules is made 2n

•  Pressure will decrease
•  Pressure will remain unchanged
•  Pressure will be doubled
•  Pressure will become three times

Pressure will be doubled

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