Van der Waal's equation for a gas is stated as, P = nRT V - nb - a n V 2 . This equation reduces to the perfect gas equation, P = nRT V When,

temperature is sufficiently high and pressure is low.

both temperature and pressure are very low.

both temperature and pressure are very high.

temperature is sufficiently low and pressure is high.

Identify the correct labels of A , B and C in the following graph from the options given below: Root mean square speed V r m s ; most proable speed V m p ; Average speed V a v

A - V mp ; B - V av ; C - V rms

A - V mp ; B - V rms ; C - V av

A - V av ; B - V rms ; C - V mp

A - V rms ; B - V mp ; C - V av

EASY

JEE Main

IMPORTANT

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Which intermolecular force is most responsible in allowing xenon gas to liquefy?

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Important Questions on States of Matter: Gases and Liquids

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 9th April 2014>Q 10

The temperature at which oxygen molecules have the same root mean square speed as helium atoms have at 300 K is : (Atomic masses : He = 4 u, O = 16 u)

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 9th April 2014>Q 11

Van der Waal's equation for a gas is stated as,

P = \frac{nRT}{V - nb} - a {(\frac{n}{V})}^{2}

.

This equation reduces to the perfect gas equation,

P = \frac{nRT}{V}

When,

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 8th January 2020 Shift 1>Q 12

A graph of vapour pressure and temperature for three different liquids

X, Y

and

Z

is shown below:
Question Image

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:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 8th January 2020 Shift 1>Q 13

The predominant intermolecular forces present in ethyl acetate, a liquid, are:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 8th April 2017>Q 14

Among the following, the incorrect statement is:

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 7th January 2020 Shift 2>Q 15

Identify the correct labels of

A, B

and

C

in the following graph from the options given below:
Question Image

Root mean square speed

(V_{r m s});

most proable speed

(V_{m p});

Average speed

(V_{a v})

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 7th January 2020 Shift 1>Q 16

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:

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 3 - States of Matter: Gases and Liquids>JEE Main - 7th January 2020 Shift 1>Q 17

The relative strength of the interionic/ intermolecular forces in a decreasing order is:

Which intermolecular force is most responsible in allowing xenon gas to liquefy?

Important Questions on States of Matter: Gases and Liquids

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