Page 1 Material downloaded from http://myCBSEguide.com and http://onlineteachers.co.in Portal for CBSE Notes, Test Papers, Sample Papers, Tips and Tricks 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]Read More
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