1. The substance which has indefinite shape and volume is:
(A) Plasma
(B) Liquid
(C) Solid
(D) Gas
2. Gases expand due to:
(A) None
(B) Cooling
(C) Boiling
(D) Heating
3. Sudden expansion of gases is called:
(A) Compton effect
(B) Stark effect
(C) Zeeman effect
(D) Joule effect
4. Which property does not belong to gases?
(A) Do not mix well
(B) Pressure
(C) Compressible
(D) Diffusion
5. The relation between temperature, volume and pressure of a gas is called:
(A) Liquids law
(B) Gas laws
(C) Solids law
(D) All of them
6. At constant temperature, volume is inversely proportional to pressure is known as:
(A) Boyle’s law
(B) Charles law
(C) Avogadro’s law
(D) Graham’s law
7. Mathematical form of Boyle’s law is:
(A) None
(B) VT = K
(C) PT = K
(D) PV = K
8. The law that relates volume and pressure of gas is:
(A) Charles law
(B) Avogadro’s law
(C) Boyle’s law
(D) Graham’s law
9. If pressure is doubled, then according to Boyle’s law, volume of gas will be:
(A) Double
(B) Same
(C) Half
(D) Cannot be measured
10. The temperature at which volume of a gas becomes zero is:
(A) Absolute temperature
(B) Critical temperature
(C) Mean temperature
(D) None
11. Absolute temperature is equal to:
(A) 273.15 K
(B) 0 K
(C) 273.15 K
(D) 273.15 °C
12. Mathematical form of Avogadro’s law is:
(A) P ∝ n
(B) None of these
(C) V ∝ T
(D) V ∝ n
13. SI value of general gas constant is:
(A) 8.3143 J K⁻¹ mol⁻¹
(B) 8.3143 kJ K⁻¹ mol⁻¹
(C) 62.4 dm³ torr K⁻¹ mol⁻¹
(D) 0.0821 dm³ atm⁻¹ mol⁻¹
14. If both temperature and volume are doubled, then pressure of gas is:
(A) Same
(B) Double
(C) Half
(D) Cannot be measured
15. SI unit of pressure is:
(A) Torr
(B) atm
(C) Pascal
(D) Pound
16. Spontaneous mixing of gases at fixed temperature and pressure is:
(A) Evaporation
(B) Effusion
(C) None
(D) Diffusion
17. The diffusion of gases will be zero at:
(A) Critical temperature
(B) Absolute temperature
(C) Mean temperature
(D) None
18. Total pressure of a mixture of gases equals sum of their partial pressures is called:
(A) Charles law
(B) Boyle’s law
(C) Graham’s law
(D) Dalton law
19. Which of the following is ideal gas equation:
(A) PV = nRT
(B) PM = nRT
(C) PR = nT
(D) PV = dRT
20. Transfer of gas molecules from high concentration to low concentration is:
(A) Evaporation
(B) Effusion
(C) None
(D) Diffusion