Question # 1

The reaction will attain the equilibrium if:

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Qc<Kc

Qc > Kc

Qc = Kc

Qc = 0

For which reaction Kf is the rate constant?

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Forward reaction

Backward reaction

Upward reaction

Downward reaction

The reaction goes from left to right , if:

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Qc = Kc

Qc > kc

Qc<Kc

Qc = 0

K_c is always equal to

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Rf/Rr

Kf /Kt

Kf/Kr

Rr/Rt

Which one of the following statements is not correct about active mass?

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Rate of reaction is directly proportional to activ emass.

Active mass is taken in molar concentration

Active mass is represented by square brackets

Active mass means total mass of substances.

In irreversible reaction, dynamic equilibrium:

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Never establishes

Establishes before the completion of reaction

Establishes after the completion of reaction

Establishes readily

In an irreversible reaction dynamic equilibrium:

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Never establishes

Established before the completion of reaction

Establishes after the completion of reaction

Establishes readily

The reactions in which products can recombine to form reactants is called.

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Irreversible reactions

Reversible reactions

Direct reactions

Indirect reactions

Such reationsin which reactants and products are sufficient in quantities the Kc value of equilibrium state will be

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Very small

Very large

Moderate

None of these

when a system is in equilibrium state or in dynamic equilibrium state.

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Reactants and product are equal

Forward reactions stops

Reverse reactions stops

Forward reaction rate and reverse reaction rate

Dynamic means, reaction is:

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In forward direction

Stop

In reverse direction

Still continuing.

Equilibrium constant has no unit when number of moles of reactants and products are:

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same

Different

Both a and b

None of these

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