Gases

Class 11 · Chemistry · 6 questions

Name: ____________________ Date: ____________

Charles's law says at constant pressure, the volume of a gas is proportional to its:
- A Mass
- B Celsius temperature
- C Density
- D Absolute temperature
A gas occupies 2 dm3 at 300 K. At constant pressure, its volume at 600 K is:
- A 4 dm3
- B 8 dm3
- C 2 dm3
- D 1 dm3
The ideal gas equation is:
- A P = nRTV
- B PV = RT / n
- C PV = nRT
- D PT = nRV
Graham's law says the rate of diffusion of a gas is inversely proportional to the square root of its:
- A Density or molar mass
- B Temperature only
- C Colour
- D Volume
Real gases behave most like ideal gases at:
- A High pressure and low temperature
- B Low pressure and high temperature
- C Low pressure and low temperature
- D High pressure and high temperature
The pressure of 2 moles of an ideal gas in a 10 dm3 vessel at 300 K is closest to: (R = 0.0821 dm3 atm / K mol)
- A 1 atm
- B 0.49 atm
- C 49 atm
- D 4.9 atm

Answer key

1. D, 2. A, 3. C, 4. A, 5. B, 6. D