EASY

JEE Main

IMPORTANT

Earn 100

The vapour pressures of $A$ and $B$ at $25 ° C$ are $90 mmHg$ and $15 mm Hg$ respectively. If $A$ and $B$ are mixed such that the mole fraction of $A$ in the mixture is $0.6,$ then the mole fraction of $B$ in the vapour phase is $x \times 10^{- 1} .$ The value of $x$ is (Nearest integer)

37.5% studentsanswered this correctly

Important Questions on Solutions

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 20 July 2021 Shift 1>Q 61

An average person needs about

10000 kJ

energy per day. The amount of glucose (molar mass

= 180.0 g {mol}^{- 1}

) needed to meet this energy requirement is ______

g .

(Use :

Δ_{C} H

(glucose)

= - 2700 kJ {mol}^{- 1}

)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 20 July 2021 Shift 1>Q 62

20 ° C

, the vapour pressure of benzene is

70

torr and that of methyl benzene is

20

torr. The mole fraction of benzene in the vapour phase at

20 ° C

above an equimolar mixture of benzene and methyl benzene is

__\times 10^{- 2} .

(Nearest integer)

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 2 September 2020 Shift 2>Q 63

The size of a raw mango shrinks to a much smaller size when kept in a concentrated salt solution. Which one of the following process can explain this?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 2 September 2020 Shift 1>Q 64

An open beaker of water in equilibrium with water vapour is in a sealed container. When a few grams of glucose are added to the beaker of water, the rate at which water molecules :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 19th April 2014>Q 65

For an ideal solution of two components

A & B

, which of the following is true?

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 19th April 2014>Q 66

The observed osmotic pressure for a

0.10 M

solution of

Fe ({NH}_{4})_{2} ({SO}_{4})_{2}

25 ° C

10.8 atm

. The expected and experimental (observed) values of Van't Hoff factor '

i

' will be respectively;

(R = 0.082 L atm k^{-} {mol}^{- 1})

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 19th April 2014>Q 67

Choose the correct statement with respect to the vapour pressure of a liquid among the following :

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 16th April 2018>Q 68

The mass of a non-volatile, non-electrolyte solute (molar mass

= 50 g {mol}^{- 1}

) needed to be dissolved in

114 g

octane to reduce its vapour pressure by

75 %

, is:

The vapour pressures of A and B at 25°C are 90 mmHg and 15 mm Hg respectively. If A and B are mixed such that the mole fraction of A in the mixture is 0.6, then the mole fraction of B in the vapour phase is x×10-1. The value of x is (Nearest integer)

Important Questions on Solutions

Learn and Prepare for any exam you want !

The vapour pressures of $A$ and $B$ at $25 ° C$ are $90 mmHg$ and $15 mm Hg$ respectively. If $A$ and $B$ are mixed such that the mole fraction of $A$ in the mixture is $0.6,$ then the mole fraction of $B$ in the vapour phase is $x \times 10^{- 1} .$ The value of $x$ is (Nearest integer)