Question # 1

Which chemical is called king of chemicals?

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KNO₃

H₂SO₄

HCl

NHO₃

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

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

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 a chemical reaction, the substance that combine are called.

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Reactant

Products

Mass

Material

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

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Chemical states

Static state

Physical state

Dynamic equilibrium state

Law of Mass Action was put forward by:

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G.N.Lewis

Lowry

Arrhenius

Gulbderg and Waage

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

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Completion

Equilibrium state

back ward

None of these

Such reactions which continue in both directions are called.

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Irreversible

Reversible

Nonreactive

Dynamic

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

Active mass is expressed as:

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{ }

[ ]

( )

l l

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

Which gas is used to manufacture king of chemicals sulphuric acid?

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N₂

O₂

Cl₂

S

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

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