Question # 1

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

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80

90

95

99

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.

What is the colour of hydrogen iodide in product?

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Purple

Yellow

Blue

Colorless

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

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temperature

Pressure

concentration

density

For reactions having large Kc value, the reaction proceeds to:

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Completion

Equilibrium state

back ward

None of these

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

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.

The reaction goes from left to right , if:

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Qc = Kc

Qc > kc

Qc<Kc

Qc = 0

A complete reaction is one is which.

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All the reactants convert into products.

All the reactants do not convert into products.

Half reactants convert into products.

Only 10% reactants convert into products.

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