MCQs 1 on Chapter 7 (Equilibrium) 11th Class

These are MCQs 1 on Chapter 7 (Equilibrium) 11th Class. Practice MCQs to check your knowledge for Entrance examination like CBSE NEET etc

1. " Whenever a stress is applied to a system at equilibrium, the equilibrium shifts in such a way so as to undo the effect of the stress imposed." This is the statement of

• Rate Law
• Law of mass action
• Le-Chatelier Principle
• Dilution law

2. The solubility of CO₂ in water increses with

• increase in temprature
• reduction of gas pressure
• increase in gas pressure
• increase in volume

3. Which of the following factors will favour the reverse reaction in a chemical equilibrium ?

• Increase in concentration of one of the reactants
• Increase in concentration of one of the products
• Removal of one of the products regularly
• None of these

4. The active mass of 64 g of HI in a two litre flask would be

• 2
• 1
• 5
• 0.25

5. Two moles of HI was heated in a sealed tube at 440^oC till the equilibrium was reached. HI was found to be 22% decomposed. The equilibrium constant for dissociation is

• 0.282
• 0.0796
• 0.0199
• 1.99

6. The state of equilibrium refers to

• State of rest
• Dynamic state
• Stationary state
• State of inertness

7. In an exothermic reaction, a 10^o rise in temprature will

• Decrease the value of equilibrium constant
• Double the value of K_c
• Not produce any change in K_c
• Produce some increase in K_c

8. At certain temprature, 50 % of HI is dissociated into H₂ and I₂, the equilibrium constant is

• 1.0
• 3.0
• 0.5
• 0.25

9. The law of mass action was given by

• Bodenstein
• Berthelot
• Grahm
• Gulberg and Waage

10. The reaction 2SO₂ + 2O₂ <=> 2SO₃ will be favoured by

• High temperature and Low Pressure
• Low temprature and High Pressure
• Low temperature and Low Pressure
• High temperature and High Pressure

MCQs 1 on Chapter 7 (Equilibrium) =>

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