Question # 1

Law of Mass Action was put forward by:

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G.N.Lewis

Lowry

Arrhenius

Gulbderg and Waage

The value of equilibrium constant (Kc) depends only on:

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temperature

Pressure

concentration

density

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 forward reaction takes place:

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Right to left

Left to Right

Only to right

Only to left

When the magnitude of Kc is very small in indicates.

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Equilibrium will never establish

All reactants will converted to products.

Reaction will go to completion

The amount of products is negligible

Which type of reactions take place in both directions?

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Addition reactions

Reversible reactions

Irreversibel reactions

Decomposition reactions

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

The reaction in which the products do not recombine to form reactants are called.

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Inversible reactions

Reversible reaction

Decomposition

Addition

The reaction goes from left to right , if:

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Qc = Kc

Qc > kc

Qc<Kc

Qc = 0

When the rate of a the forward reaction takes place at the rate of reverse reaction the composition of the reaction mixture remains constant it is called.

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Chemical equilibrium

Dynamic equilibrium

Static equilibrium

All

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

In a chemical reaction, the substance that combine are called.

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Reactant

Products

Mass

Material

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Chemistry 10th Class English Medium Unit 9 Online Test MCQs With Answers

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