Question

Each question contains statements-1 (Assertion) and Statement-2 (Reason)
Examine the statements carefully and mark the correct answer according to
the instruction given below:
A. If both the statements are true and statement-2 is the correct explaination
of statement-1.
B. If both the statements are true but statement-2 is not the correct explanation
of statement-1.
C. If statement-1 is true and statement-2 is false.
D. If statement-1 is false and statement-2 is true.
9. Statement-1 For reaction A + B C, K = 4 on addition of catalyst K
becomes more than 4.
Statement-2 Catalyst only helps to attain the equilibrium faster from either
end of reaction.
10. Statement-1 Cl2 + 2OH– ClO–
+ Cl–
is a disproportion reaction.
Statement-2 In disproportionation, the same element get oxidised as well as reduced

Answer 1

(9)--> (D) Statement-1 is false and statement-2 is true.

- Addition of catalyst will not have any effect on K.

- This is because catalyst only helps to attain the equilibrium faster from either  end of reaction.

(10)--> (A) Both the statements are true and statement-2 is the correct explanation  of statement-1.

- The given reaction is a disproportion reaction.

Cl₂ + 2 OH⁻ → ClO⁻  + Cl⁻ + H₂O

- The oxidation state of chlorine in Cl₂ is 0

- In ClO⁻ it has oxidation state of +1 and in Cl⁻ it has oxidation state of -1.

- Since Chlorine gets oxidised as well as reduced, it is a disproportionation reaction.