Question # 1

The unit of molar concentration:

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mol. dm^-2

mol. dm^-1

mol. dm

mol. dm^-3

The plant use

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Carbon di oxide

Oxygen

Nitrogen

Sulphur

When the reaction causes to produced it is called.

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Chemical equlibrium state

Static equilibrium

Dynamic equilibriiun

All

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

Guldberg and waage out forward law of mass action in:

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1889

1879

1869

1859

The % age of nitrogen and oxygen in our atmosphere is:

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80

90

95

99

For which reaction Kf is the rate constant?

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Forward reaction

Backward reaction

Upward reaction

Downward reaction

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

Which types of reaction speed up gradually?

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Irreversible reactions

Reversibel reactions

Forward reactions

Decomposition reactions.

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

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