Question # 1

Equilibrium constant value "K" is equal to:

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Kt / Kr

Ki / Kr

Kc / Qc

Qc /Kc

When the magnitude of Kc is very small it indicates.

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Equilibrium will never establish

All reactants will be converted to products.

Reaction will go to completion

The amount of products is negligible

At dynamic equilibrium state:

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Rate of forward reaction≠ Rate of reverse reaction

Rate of forward reaction > Rate of reverse reaction

Rate of forward reaction = Rate of reverse reaction

Rate of forward reaction < rate of reverse reaction

In chemical reaction , the substances that combine are called.

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Reactants

Products

Equlibrium

Numerator

Which gas is used to manufacture king of chemicals sulphuric acid?

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N₂

O₂

Cl₂

S

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

When the magnitude of Kc is very large it indicates.

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Reaction mixture consist of almost all products.

Reaction mixture consist of almost all reactants.

Reaction has not gone to completion

Reaction mixture has negligible products.

The color of Iodine is:

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Purple

Black

Red

Pink

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

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80

90

95

99

When a system is at equilibrium states?

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The concentration of reactants and products becomes equal

The opposing reactions

The rate of the reverse reaction becomes very low

The rates of the forward and reverse reactions becomes equal.

The unit of molar concentration is:

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moldm^-3

moldm⁺³

molcm^-3

molcm⁺³

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

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