Question # 1

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

In chemical reaction , the substances that combine are called.

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Reactants

Products

Equlibrium

Numerator

A complete reaction is one is which.

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All the reactants convert into products.

All the reactants do not convert into products.

Half reactants convert into products.

Only 10% reactants convert into products.

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

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Inversible reactions

Reversible reaction

Decomposition

Addition

If Qc = Kc the reaction goes in:

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Forward

Reverse

At equilibrium state

None

The major components of Atmosphere are:

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Carbon and Nitrogen

Nitrogen and Oxygen

Oxygen and Chlorine

None of these

Who proposed "Law of mass action"?

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Newton

Boyle

Guldberg and waage

Lavoisier

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

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Chemical states

Static state

Physical state

Dynamic equilibrium state

In the beginning the rate of reverse reaction is

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Negligible

Moderate

Very fast

Slow

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

The rate of reverse reaction in the beginning.

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Slow

moderate

Very fast

Low

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

The color of hydrogen Iodide is:

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Colourless

Black

Red

Pink

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

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