Question # 1

The dynamic equilibrium in irreversible reaction.

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Never establishes

Establishes after completion of reaction

Establishes before completion of reaction

Establishes very soon

When the number of moles of both sides are equal in a reaction then the unit of Kc will be:

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no unit

mol-2 dm6

mol dm3

mo-2 dn

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

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80

90

95

99

The substance formed during the chemical reaction are called.

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Products

Reactants

Radical

Element

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

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temperature

Pressure

concentration

density

The plant use

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Carbon di oxide

Oxygen

Nitrogen

Sulphur

K_c is always equal to

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Rf/Rr

Kf /Kt

Kf/Kr

Rr/Rt

Which type of reactions do not go to completion?

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Irreversible reaction

Reversible reactions

Addition reactions

Decomposition reactions

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 color of hydrogen Iodide is:

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Colourless

Black

Red

Pink

Guldberg and waage out forward law of mass action in:

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1889

1879

1869

1859

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

Which one of the following statements is not correct about active mass?

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Rate of reaction is directly proportional to activ emass.

Active mass is taken in molar concentration

Active mass is represented by square brackets

Active mass means total mass of substances.

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