Question # 1

A reverse reaction is that.

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Which proceed from left to high

In which reactants reacts to form products

Which slow down gradually

Which speed up gradually

The reaction goes from left to right , if:

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Qc = Kc

Qc > kc

Qc<Kc

Qc = 0

We exhale gas in the atmosphere during respiration.

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Carbon dioxide

Oxygen

Nitrogen

Water

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

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Inversible reactions

Reversible reaction

Decomposition

Addition

When the numbers of moles of both sides are equal in a reaction, then the unit of K_c will be:

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No unit

mol^-2 dm⁶

mol dm³

mol^-2dm

At dynamic equilibrium:

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The reactions stops to proceed

The amounts of reactants and products are equal

The speed of the forward is reverse reactions are equal

The reaction can no longer be reversed

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

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Chemical states

Static state

Physical state

Dynamic equilibrium state

In a Reversible Reaction if Qc = Kc then.

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Reaction is occuring in forward direction

Reaction is occuring in Reverse direction

Equilibrium has been allained

Reaction is not at equilibrium

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

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hydrogen

oxygen

chlorine

nitrogen

The color of hydrogen Iodide is:

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Colourless

Black

Red

Pink

The two major components of atmosphere are:

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Hydrogen and oxygen

Nitrogen and Hydrogen

Nitrogen and oxygen

Oxygen and water.

The reaction will attain the equilibrium if:

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Qc<Kc

Qc > Kc

Qc = Kc

Qc = 0

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

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

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