Claussius-Clayperon equation gives accurate result, when the

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Question: Claussius-Clayperon equation gives accurate result, when the
[A].

vapour pressure is relatively low and the temperature does not vary over wide limits.

[B].

vapour obeys the ideal gas law and the latent heat of vaporisation is constant.

[C].

volume in the liquid state is negligible compared with that in the vapour state.

[D].

all (a), (b) and (c).

Answer: Option D

Explanation:

No answer description available for this question.

A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.

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Question: A cylinder contains 640 gm of liquid oxygen. The volume occupied (in litres) by the oxygen, when it is released and brought to standard conditions (0°C, 760 mm Hg) will be __________ litres.
[A].

448

[B].

224

[C].

22.4

[D].

data insufficient; can’t be computed

Answer: Option A

Explanation:

No answer description available for this question.

“The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances”. This is the

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Question: “The rate at which a substance reacts is proportional to its active mass and the rate of a chemical reaction is proportional to the product of active masses of the reacting substances”. This is the
[A].

Lewis-Randall rule.

[B].

statement of Vant-Hoff equation.

[C].

Le-Chatelier’s principle.

[D].

none of these.

Answer: Option D

Explanation:

No answer description available for this question.

A solute distributes itself between two non-miscible solvents in contact with each other in such a way that, at a constant temperature, the ratio of its concentrations in two layers is constant, irrespective of its total amount”. This is

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Question: A solute distributes itself between two non-miscible solvents in contact with each other in such a way that, at a constant temperature, the ratio of its concentrations in two layers is constant, irrespective of its total amount”. This is
[A].

the distribution law.

[B].

followed from Margule’s equation.

[C].

a corollary of Henry’s law.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which

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Question: Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which
[A].

a homogeneous solution (say of phenol water) is formed.

[B].

mutual solubility of the two liquids shows a decreasing trend.

[C].

two liquids are completely separated into two layers.

[D].

none of these.

Answer: Option A

Explanation:

No answer description available for this question.

In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is

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Question: In reactions involving solids and liquids (where change in volume is negligible), the heat of reaction at constant pressure as compared to that at constant volume is
[A].

more

[B].

less

[C].

same

[D].

unpredictable; depends on the particular reaction

Answer: Option C

Explanation:

No answer description available for this question.

If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will

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Question: If the molar heat capacities (Cp or Cv) of the reactants and products of a chemical reaction are identical, then, with the increase in temperature, the heat of reaction will
[A].

increase

[B].

decrease

[C].

remain unaltered

[D].

increase or decrease ; depends on the particular reaction

Answer: Option C

Explanation:

No answer description available for this question.