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

Question # 1

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

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temperature

Pressure

concentration

density

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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

The color of Iodine is:

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Purple

Black

Red

Pink

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Question # 5

The plant use

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Carbon di oxide

Oxygen

Nitrogen

Sulphur

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Question # 6

Equilibrium constant has no unit when number of moles of reactants and products are:

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same

Different

Both a and b

None of these

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Question # 7

A dynamic equilibrium

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Reaction stops to proceed

Amounts of reactants and products are equal

Rate of forward and reverse reaction are equl

Reaction can no longer be reversed.

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Question # 8

Reactions which have comparable amounts 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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Question # 9

The value of K_c depends on.

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Temperature

Pressure

Volume

Atmosphere

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Question # 10

K_c is always equal to

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Rf/Rr

Kf /Kt

Kf/Kr

Rr/Rt

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Question # 11

The lives of aquatic plants and animals are indirectly related to concentration of dissolved ------ in water:

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hydrogen

oxygen

chlorine

nitrogen

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Question # 12

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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Question # 13

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

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