Ch-3 Gases Leave a Comment / By abdulslambsn@gmail.com / October 6, 2025 Welcome To Your Quiz "Ch-3 Gases" Click on "Start Quiz" To Continue... 1. Partial pressure of oxygen in human lungs in torr is: 161 116 159 760 None 2. If absolute temperature of a gas is doubled and pressure is reduced to one half, the volume of the gas will: Remain unchanged Increase four times Reduce to 1/4 Be doubled None 3. The molar volume of CO2 is maximum at: S.T.P 127°C and 1 atm 0°C and 2 atm 273K None 4. Which gas has highest diffusion rate? SO2 Cl2 NH3 CO2 None 5. Which one of the following molecules have maximum root mean square velocity at 25°C: CO2 H2S NH3 CO None 6. The ideal gas constant R, when expressed in dm³ atm. mol-¹.K-¹ units have a value of: 0.0821 1.0821 82.21 82.1 None 7. Which of the following will have the same number of moles at S.T.Р? 280 cm³ of CO2 and 280 cm³ of N2O 11.2 dm³ of O2 and 32 g of 02 44 g CO2 and 11.2 dm³ of CO 28.0g N2 and 5.6 g O2 of oxygen None 8. Pilots feel uncomfortable breathing in unpressurized cabins: Due to high pressure of CО2 Due to low pressure of O2 Due to fatigue Due to low pressure of CO2 None 9. If the values of 'a' and 'b' in Van der Waal's equation are close to zero for a gas, then the gas is: Ideal Non-ideal highly polar Liquefied easily None 10. Which of the following is not an intermolecular force between molecules: Covalent bonds Hydrogen bonds De-bye forces Ion dipole forces None 11. Equal masses of methane and oxygen are mixed in an empty container at 25°С. The fraction of total pressure exerted by oxygen is: 1/3 8/9 1/9 16/17 None 12. The value of R (in Nm K-¹ mol-¹) is: 8.214 8.314 0.0321 62.4 None 13. The order of rate of diffusion of gases NH3, SO2, Cl2 and CO2 is: NH3 > SO2 > Cl2 > CO2 NH3 > CO2 > SO2 > Cl2 Cl2 > SO2 > CO2 > NHз NH3 > CO2 > Cl2 > SO2 None 14. One torr is equal to: One atmosphere One Pascal One mm of Hg 76 cm of Hg None 15. Which gas deviate more from ideal behaviour at high pressure: H2 He Ar NH3 None 16. THe kinetic molecular theory of gases was put forward in 1738 by: Boltzman Maxwell Clausius Bernouli None 17. 0.5 mole of NO2 and 0.5 mole of SO3 gas have equal: Volume Molecules Mass Atoms None 18. Which gas cannot be dried by passing over H2SO4: SO2 H2 NO2 H2S None 19. Which one of the following has least critical temperature: O2 NH3 H2O HCl None 20. Lind's method is employed for: Separation of gases Expansion of gases Compression of gases Liquifaction of gases None 21. Pressure remaining constant, at which temperature the volume of a gas will become twice of what it is at 0°C: 546°C 200°C 546K 273K None 22. Plasmas are found in everything from sun to: Atoms Molecules Electrons Quarks None 23. The density of a gas can be determined by formula: d = PM/RT d = RT/PM d = PMR/T d = PMT/R None 24. The absolute zero is: Attainable May be attainable Un attainable in gaseous state May not be attainable None 25. Calorie is equivalent to: 0.4184 J 41.84 J 4.184 J 10.418 J None 26. Absolute zero is equal to: 273°C -273°C 0°C 273 K None 27. Standard temperature: 0°C 75°C 273°C 100°C None 28. Which pair of gases do not obey Dalton's law of partial pressure: H2 and O2 N2 and O2 NH3 and HCl H2 and He None 29. For a gas obeying Boyle's law if pressure is doubled the volume becomes: Double Half 2 Times 1/2 None 30. Mathematically Boyle's law is shown as: PT = K VT = K P/T =K PV = K None 1 out of 6 Thanks For Taking This Quiz - Please See Your Answers/Results Below After Entering Your Name & Email... Name Email Time's up
