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

Question # 1

Who proposed "Law of mass action"?

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Newton

Boyle

Guldberg and waage

Lavoisier

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Question # 2

In chemical reaction , the substances that combine are called.

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Reactants

Products

Equlibrium

Numerator

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Question # 3

In the beginning the rate of reverse reaction is

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Negligible

Moderate

Very fast

Slow

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Question # 4

At equilibrium state there are possibilities: OR types of chemical equilibrium are.

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Question # 5

when a system is in equilibrium state or in dynamic equilibrium state.

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Reactants and product are equal

Forward reactions stops

Reverse reactions stops

Forward reaction rate and reverse reaction rate

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Question # 6

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

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Question # 7

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

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Question # 8

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

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Question # 9

Reaction which have comparable amount 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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