Punjab 11th Class Chemistry Chapter 3 Gases Mcqs Test Online Chemistry Chapter 3 Gases Mcqs Test Online Punjab 9th Class 1234567891011121314151617181920Show paginator Hide paginator 5% Question 1 of 20Chemistry 1. The particles of a gas can be described as Vibrating about defined position Only moving outwards in direction Rising upwards Moving randomly in all directions Question 1 of 20Question 2 of 20 2. Which of the following gases has the lowest density under room conditions Ne N₂ CO NH₃Question 2 of 20Question 3 of 20 3. 760 torr are equal to Pascal. 101324 Pascal 760 Pascal One Pascal 1.01325 Pascal Question 3 of 20Question 4 of 20 4. Which gas is more ideal at S.T.P. H₂S SO₂ NH₃ H₂ Question 4 of 20Question 5 of 20 5. Which statement provides the best evidence that matter may exist as tiny particles moving at “random motion”. Many elements conduct electricity. A small mass of water produces a much larger volume of steam Air can be readily compressed If a bottle of ether is opened, the smell is quickly detected in all parts of the room Question 5 of 20Question 6 of 20 6. When a large beaker full of N₂ is inverted over a porous pot containing Com the water level in the specified apparatus does not change. What is the reason for this:Both gases are soluble in H₂O The two gases have equal density Nitrogen is an un-reactive gas. Both gases are diatomic. Question 6 of 20Question 7 of 20 7. Which statement explains why the compounds propane and CO₂ diffuse at the same rate? Their molecules contain carbon They are both gases They have the same relative molecular mass Both are denser than air.Question 7 of 20Question 8 of 20 8. One heating direct conversion of solid in to gas is called Boiling Diffusion Evaporation Sublimation Question 8 of 20Question 9 of 20 9. When compressed hydrogen is allowed to expand rapidly, it causes SolidificationLiquefaction Heating Cooling Question 9 of 20Question 10 of 20 10. When steam condenses, the particles Move further apart Lose energy to their surroundings Shrink to a smaller size Vibrate about fixed positions Question 10 of 20Question 11 of 20 11. Deep sea diver’s tank contains 4% N₂ + 96% O₂ 50% N₂ + 50% O₂ 96% N₂ + 4% O₂ None of these Question 11 of 20Question 12 of 20 12. According to Graham’s Law of diffusion, the rate of diffusion of H₂ and O₂ has the ratio 1:4 1:√4 2:324:1 Question 12 of 20Question 13 of 20 13. Which of the following is an example of diffusion? Water spreading out on the surface of a table. Steam condensing on a cold window. Bubbles rising in a beaker of boiling water. The spreading of the smell of flowers in a garden.Question 13 of 20Question 14 of 20 14. In which of the following are the particles the most disordered. Impure water at 102°C Steam at 100°C Water Water at 0°CQuestion 14 of 20Question 15 of 20 15. According to the kinetic theory of gases, the molecular collisions are elastic. Such collisions cause No energy change High energy change None of these A small energy change Question 15 of 20Question 16 of 20 16. In S.I units, the value of R is None of these 8.3143 Nm K⁻¹ mole⁻¹ 8.3413 Nm K⁻¹ mole⁻¹ 0.0821 dm³ atm K⁻¹ mole⁻¹ Question 16 of 20Question 17 of 20 17. What volume of gas would one mole of hydrogen occupy at S.T.P? 44 dm³22.4 dm³ 11.2 dm³ 33.6 dm³ Question 17 of 20Question 18 of 20 18. The number of molecules of 4 g H₂ are _________ number of molecules of 56 g of N₂. Greater than None of these Less than Equal to Question 18 of 20Question 19 of 20 19. According to Kinetic Molecular theory K.E of Molecules increase when they Are condensed into solid Are melted from solid to liquid stateAre mixed with other molecules at low temperature Are frozen into solid Question 19 of 20Question 20 of 20Abbreviations 20. Which of these changes would speed up the rate of diffusion the most. NoMass of ParticleTemperature of SurroundingsADecreaseDecreaseBDecreaseIncreaseCIncreaseIncreaseDIncreaseDecreaseBDACQuestion 20 of 20 Loading... Test By Subject Punjab Test By Topics 11th Class Chemistry You Can Learn and Gain more Knowledge through our Online Quiz and Testing system Just Search your desired Preparation subject at Gotest.