Question # 1

In chemical reaction , the substances that combine are called.

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Reactants

Products

Equlibrium

Numerator

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

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Reversible reaction

Irreversible reaction

Decomposition

Addition

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

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equilibrium constant

dynamic equilibrium

static equilibrium

simple equilibrium

Which type of reactions do not go to completion?

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Irreversible reaction

Reversible reactions

Addition reactions

Decomposition reactions

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

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 % age of nitrogen and oxygen in our atmosphere is:

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80

90

95

99

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

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N₂

O₂

Cl₂

S

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

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