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Important Questions on States of Matter

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Chemistry>Physical Chemistry>States of Matter>Liquid State

The units of surface tension and viscosity of a liquid, respectively, are

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Liquid State

35^{o} C,

the vapour pressure of

C S_{2},

512 mmHg

and that of acetone is

144 m m H g .

A solution of

C S_{2}

in acetone has a total vapour pressure of

600 m m H g

. The false statement amongst the following is:

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Liquid State

Based on the given figure, the number of correct statement/s is/are

Question Image

A. Surface tension is the outcome of equal attractive and repulsion forces acting on the liquid molecule in bulk.

B. Surface tension is due to uneven forces acting on the molecules present on the surface.

C. The molecule in the bulk can never come to the liquid surface.

D. The molecules on the surface are responsible for vapour pressure if the system is a closed system.

EASY

Chemistry>Physical Chemistry>States of Matter>Liquid State

The viscosity of a liquid can be decreased by

EASY

Chemistry>Physical Chemistry>States of Matter>Liquid State

The liquid having maximum surface tension is

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Liquid State

The qualitative sketches I, II and III given below show the variation of surface tension with molar concentration of three different aqueous solutions of KCl,

C H_{3} O H

and

C H_{3} {(C H_{2})}_{11} O S O_{3}^{-} N a^{+}

at room temperature. The correct assignment of the sketches is -

Question Image

EASY

Chemistry>Physical Chemistry>States of Matter>Liquid State

The

S . l

unit of coefficient of viscosity

(η)

is:

HARD

Chemistry>Physical Chemistry>States of Matter>Liquid State

A graph of vapour pressure and temperature for three different liquids

X, Y

and

Z

is shown below:
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The following inferences are made:

(A) X

has higher intermolecular interactions compared to

Y .

(B) X

has lower intermolecular interactions compared to

Y .

(C) Z

has lower intermolecular interactions compared to

Y .

The correct inferences is/are:

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Liquid State

Which of the following statements regarding a liquid is not correct?

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Chemistry>Physical Chemistry>States of Matter>Liquid State

The vapour pressure of water at

300 K

in a closed container is

0.4 atm

. If the volume of the container is double, its vapour pressure at

300 K

will be

HARD

Chemistry>Physical Chemistry>States of Matter>Liquid State

The incorrect statement among the following is

EASY

Chemistry>Physical Chemistry>States of Matter>Liquid State

The vapour pressure of a liquid depends upon _______

EASY

Chemistry>Physical Chemistry>States of Matter>Liquid State

Among the following substances the lowest vapour pressure is exerted by

EASY

Chemistry>Physical Chemistry>States of Matter>Liquid State

Evaporation and boiling differs

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Chemistry>Physical Chemistry>States of Matter>Liquid State

Compared to Jalandhar, the vapour pressure of water at Simla is

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Chemistry>Physical Chemistry>States of Matter>Liquid State

If saturated vapours are compressed slowly (temperature remaining constant) to half the initial volume, the vapour pressure will

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Liquid State

Which of the following will increase with the increase in temperature?

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Liquid State

Which of the following statements regarding a liquid is not correct?

HARD

Chemistry>Physical Chemistry>States of Matter>Liquid State

The variation of vapour pressure with temperature for a liquid was studied by plotting $logP$ versus $\frac{1}{T}$ as shown in the Figure. The slope of the line $\tan (θ)$ was found to be $- 2 K$ . Then latent heat of vaporisation of the given liquid is

Question Image

MEDIUM

Chemistry>Physical Chemistry>States of Matter>Liquid State

Two vessels

A

and

B

have volumes

V

and

4 V

respectively. Both vessels contain some water. The pressure in the space above water is

P_{1}

in vessel

A

and

P_{2}

in vessel

B

at temperature

T

which one is correct:

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Important Questions on States of Matter

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