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Equilibrium - Test paper 04, Chemistry, Class XI, CBSE Test paper Class 11 Notes | EduRev

Class 11 : Equilibrium - Test paper 04, Chemistry, Class XI, CBSE Test paper Class 11 Notes | EduRev

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CBSE TEST PAPER 04 
CLASS XI CHEMISTRY (Equilibrium) 
Topic : Factors Affecting Equilibria   
   
1. State Le chatelier’s principle.  [1] 
2. Can a catalyst change the position of equilibrium in a reaction?  [1] 
3. What is the effect of reducing the volume on the system described below?  
2C(s) + O 2(g) ? 2CO(g)  
[1] 
4. Why the addition of inert gas does does not change the equilibrium?  [2] 
5. What happens when temperature increases for a reaction?   [1] 
6. The equilibrium constant of a reaction increases with rise in temperature. Is 
the reaction exo – or endothermic?  
[2] 
7. Can a catalyst change the position of equilibrium in a reaction?  [1] 
8. If Qc  < Kc, when we continuously remove the product, what would be the 
direction of the reaction?  
[1] 
9. Using Le – chatelier principle, predict the effect of  
(a) decreasing the temperature  
(b) increasing the temperature  
in each of the following equilibrium systems:  
(i)  N 2   (g) + 3H 2(g) ? 2NH 3(g) + ? 
(ii)  N 2(g) + O 2(g) + ?? 2NO(g)  
[2] 
10. (i) In the reaction equilibrium  
A + B ? C +D,  
What will happen to the concentrations of A, B and D if concentration of C is 
increased. 
(ii)  what will happen if concentration of A is increased?  
[2]

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