Question # 1

Dynamic means, reaction is:

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In forward direction

Stop

In reverse direction

Still continuing.

The value of equilibrium constant (Kc) depends only on:

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temperature

Pressure

concentration

density

In chemical reaction , the substances that combine are called.

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Reactants

Products

Equlibrium

Numerator

Which chemical is called king of chemicals?

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KNO₃

H₂SO₄

HCl

NHO₃

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

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

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Completion

Equilibrium state

back ward

None of these

The reactions in which products can recombine to form reactants is called.

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Irreversible reactions

Reversible reactions

Direct reactions

Indirect reactions

Who proposed "Law of mass action"?

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Newton

Boyle

Guldberg and waage

Lavoisier

An equilibrium is achievable only in a:

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big system

small system

open system

closed system

What is the colour of hydrogen iodide in product?

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Purple

Yellow

Blue

Colorless

Such reactions which continue in both directions are called.

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Irreversible

Reversible

Nonreactive

Dynamic

The reaction will attain the equilibrium if:

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Qc<Kc

Qc > Kc

Qc = Kc

Qc = 0

When the magnitude of Kc is very large in indicates.

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Reaction never go to completion

Reaction is in equilibrium state

Reaction will complete after some time

Reaction has almost to completion

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

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