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a

In equilibrium mixture of ice and water kept in perfectly insulated flask mass of ice and water does not change with time.

b

The intensity of red colour increases when oxalic acid is added to a solution containing iron(III) nitrate and potassium thiocyanate.

c

On addition of catalyst the equilibrium constant value is not affected.

d

Equilibrium constant for a reaction with negative H value decreases as the temperature increases.

answer is B.

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Detailed Solution

Fe+3+SCN[Fe(CNSred)]2+
Addition of oxalic acid shows redox change with Fe3+ to convert them into Fe2+ and thus backward reaction predominates and thus intensity of red colour decreases.

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which of the following statements is incorrect?