Question # 1

We exhale gas in the atmosphere during respiration.

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Carbon dioxide

Oxygen

Nitrogen

Water

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

Law of Mass Action was put forward by:

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G.N.Lewis

Lowry

Arrhenius

Gulbderg and Waage

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

When a reaction ceases to proceed further , it is called.

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Chemical states

Static state

Physical state

Dynamic equilibrium state

At dynamic equilibrium state:

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Rate of forward reaction≠ Rate of reverse reaction

Rate of forward reaction > Rate of reverse reaction

Rate of forward reaction = Rate of reverse reaction

Rate of forward reaction < rate of reverse reaction

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

Such reactions which continue in both directions are called.

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Irreversible

Reversible

Nonreactive

Dynamic

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

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Reactant

Products

Mass

Material

Who proposed "Law of mass action"?

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Newton

Boyle

Guldberg and waage

Lavoisier

If Qc = Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

The value of K_c depends on.

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Temperature

Pressure

Volume

Atmosphere

For reactions having large Kc value, the reaction proceeds to:

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Completion

Equilibrium state

back ward

None of these

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

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