Question # 1

When the magnitude of Kc is very small it indicates.

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Equilibrium will never establish

All reactants will be converted to products.

Reaction will go to completion

The amount of products is negligible

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

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

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

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

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Inversible reactions

Reversible reaction

Decomposition

Addition

Which type of reactions do not go to completion?

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Irreversible reaction

Reversible reactions

Addition reactions

Decomposition reactions

When the number of moles of both sides are equal in a reaction then the unit of Kc will be:

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no unit

mol-2 dm6

mol dm3

mo-2 dn

Guldberg and waage put forward law of mass action in:

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1860

1869

1870

1879

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

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Completion

Equilibrium state

back ward

None of these

Such reaction which can be made proceed in either direction depending upon the condition:

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simple reaction

reversible reaction

irreversible reaction

chain reaction

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

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

Reactions which have comparable amounts of reactants and products at equilibrium state have:

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very small Kc value

Very large Kc value

Moderate Kc value

None of these

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