Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 12

HARD

KVPY Aptitude Test - Stream SX

IMPORTANT

Earn 100

A vessel has nitrogen gas and water vapours in equilibrium with liquid water at a total pressure of $1 atm$ . The partial pressure of water vapours is $0.3 atm$ . The volume of this vessel is reduced to one third of the original volume, at the same temperature, then the total pressure of the system is:(Neglect volume occupied by liquid water)

25% studentsanswered this correctly

Important Questions on Solution & Colligative Properties

MEDIUM

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 13

At a constant temperature,

ΔS

will be the maximum for which of the following processes:

EASY

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 14

If

P_{0}

and

P

are the vapour pressures of a solvent and its solution, respectively, and

N_{1}

and

N_{2}

are the mole fractions of the solvent and non-volatile solute, respectively, then the correct relation is:

EASY

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 15

The vapour pressure of a pure liquid solvent

A

is

0.80 atm

. When a non-volatile substance

B

is added to the solvent, its vapour pressure drops to

0.60 atm

. Mole fraction of the component

B

in the solution is:

EASY

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 16

Pressure cooker reduces cooking time because

EASY

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 17

At higher altitudes, water boils at the temperature

< 100 ° C

because

EASY

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 18

The vapour pressure of a dilute aqueous solution of glucose is

750 mm

of mercury at

373 K

. The mole fraction of the solute is

MEDIUM

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 19

Y gram

of a non-volatile organic substance of molecular mass

M

is dissolved into

250 gram

of benzene. Molal elevation constant of benzene is

K_{b}

. The elevation in its boiling point is given by:

MEDIUM

KVPY Aptitude Test - Stream SX

IMPORTANT

Practice Book for KVPY Aptitude Test - Stream SX Chemistry>Chapter 3 - Solution & Colligative Properties>Exercise>Q 20

Which has the equal boiling point?

( $I$ ) $0.1 M {Na}_{2} {SO}_{4}$

( $II$ ) $0.1 M C_{6} H_{12} O_{6}$ (glucose)

( $III$ ) $0.1 M {MgCl}_{2}$

( $IV$ ) $0.1 M Al {({NO}_{3})}_{3}$

The correct answer is: