Question # 1

The reaction in which the products can recombine to form reactants are called.

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Reversible reaction

Irreversible reaction

Decomposition

Addition

The unit of molar concentration is:

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moldm^-3

moldm⁺³

molcm^-3

molcm⁺³

The color of Iodine is:

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Purple

Black

Red

Pink

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 reaction in which the number of moles reactants and products not equal in balance chemical equation the units of Kc for this reactions are

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mol^-2

dm³

mol²

mol dm^-1

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

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Chemical states

Static state

Physical state

Dynamic equilibrium state

The dynamic equilibrium in irreversible reaction.

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Never establishes

Establishes after completion of reaction

Establishes before completion of reaction

Establishes very soon

At dynamic equilibrium:

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The reactions stops to proceed

The amounts of reactants and products are equal

The speed of the forward is reverse reactions are equal

The reaction can no longer be reversed

The rate of reverse reaction in the beginning.

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Slow

moderate

Very fast

Low

At equilibrium state, when reaction cases to proceed, it is called:

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equilibrium constant

dynamic equilibrium

static equilibrium

simple equilibrium

Active mass is expressed as:

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{ }

[ ]

( )

l l

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

Which chemical is called king of chemicals?

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KNO₃

H₂SO₄

HCl

NHO₃

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10th Class Chemistry Chapter 9 Chemical Equilibrium English Medium KPK Boards Online Mcqs MCQs With Answers

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