Quiz  /  Chemical Equilibrium Gate & PSU MCQ Questions With Answers

  • 1. 
    If the system is shifted to the left, it means that.....

  • Q < Kc
  • Q > Kc
  • Q = Kc
  • None of these

  • 2. 
    Does equilibrium constant have a unit?

  • Yes
  • No

  • 3. 
    What will happen to the equilibrium composition if we change the temperature?

  • Changed
  • Unchanged

  • 4. 
    What will happen to the system if we decrease the pressure?

  • System not affected at all
  • System will shifted to the left
  • System will shifted to the right

  • 5. 
    What happen to the system if NH3 were removed?

  • System not affected at all
  • System will shifted to the left
  • System will shifted to the right

  • 6. 
    What is the correct formula of relationship between Kc and Kp?

  • Kp=Kc(RT)ΔnKp=Kc\left(RT\right)^{\Delta n}Kp=Kc(RT)Δn
  • Kc=Kp(RT)ΔnKc=Kp\left(RT\right)^{\Delta n}Kc=Kp(RT)Δn
  • Kp=(RT)ΔnKp=\left(RT\right)^{\Delta n}Kp=(RT)Δn
  • Kp×Kc=(RT)ΔnKp\times Kc=\left(RT\right)^{\Delta n}Kp×Kc=(RT)Δn

  • 7. 
    What will happen to the equilibrium constant if we change the temperature on an equilibrium system?

  • Changed
  • Unchanged

  • 8. 
    If the system is shifted to right, it means that.....

  • Q < Kc
  • Q > Kc
  • Q = Kc
  • All of above

  • 9. 
    What will happen to the chemical composition if a catalyst was added to the equilibrium system?

  • Changed
  • Unchanged

  • 10. 
    What will happen to the equilibrium constant if a catalyst was added to an equilibrium system?

  • Changed
  • Unchanged

  • 11. 
    Which one is wrong for the characteristics of a system in equilibrium?

  • Rate forward more than rate reverse
  • Reaction still ongoing, but the [reactant] & [product] remain constant
  • Must take place in close system
  • Must be reversible reaction

  • 12. 
    What will happen to the equilibrium composition if we change the pressure on an equilibrium system?

  • Changed
  • Unchanged

  • 13. 
    What is the value of Δn\Delta nΔn ?

  • -1
  • 0
  • 1
  • 2

  • 14. 
    What will happen to the equilibrium constant if we change the pressure on an equilibrium system?

  • Changed
  • Unchanged

  • 15. 
    What is the disturbance that will not affected the equilibrium system at all?

  • Adding inert gas at constant volume
  • Changed the temperature
  • Changed the pressure
  • Adding inert gas at constant pressure
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