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Which of the following is not a characteristic property of chemical equilibrium?
- ARate of forward reaction is equal to rate of backward reaction at equilibrium.
- BAfter reaching the chemical equilibrium,the concentrations of reactants and products remain unchanged with time.
- CFor $A_{(g)} \rightleftharpoons B_{(g)}$,$K_c$ is $10^{-2}$. If this reaction is carried out in the presence of a catalyst,the value of $K_c$ decreases.
- DAfter reaching the equilibrium,both forward and backward reactions continue to take place.
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