MEDIUM

JEE Main

IMPORTANT

Earn 100

$C_{6} H_{6}$ freezes at $5.5 ° C .$ The temperature at which a solution of $10 g$ of $C_{4} H_{10}$ in $200 g$ of $C_{6} H_{6}$ freeze is _______ ${}^{\circ}C .$ (nearest integer value), (The molal freezing point depression constant of $C_{6} H_{6}$ is $5.12 ° C / m .$ )

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Important Questions on Solutions

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 24 Feb 2021 Shift 1>Q 55

When $9.45 g$ of ${ClCH}_{2} COOH$ is added to $500 mL$ of water, its freezing point drops by $0.5 ° C .$ The dissociation constant of ${ClCH}_{2} COOH$ is $x \times 10^{- 3} .$ The value of $x$ is off to the nearest integer)

$[K_{f (H_{2} O)} = 1.86 K kg {mol}^{- 1}]$

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 24 Feb 2021 Shift 1>Q 56

4.5 g

of compound

A (M . W . = 90)

was used to make

250 mL

of its aqueous solution. The molarity of the solution in

M

x \times 10^{- 1} .

The value of

x

is_____ (Rounded off to the nearest integer)

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 22 July 2021 Shift 1>Q 57

The water having more dissolved

O_{2}

is :

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 22 July 2021 Shift 1>Q 58

Which one of the following

0.06 M

aqueous solutions has lowest freezing point ?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 22 July 2021 Shift 1>Q 59

If the concentration of glucose

(C_{6} H_{12} O_{6})

in blood is

0.72 g L^{- 1},

the molarity of glucose in blood is

- \times 10^{- 3} M

(Nearest integer):

[

Given : Atomic mass of

C = 12, H = 1, O = 16 u]

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 20 July 2021 Shift 2>Q 60

The vapour pressures of

A

and

B

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)

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)

C6H6 freezes at 5.5°C. The temperature at which a solution of 10 g of C4H10 in 200 g of C6H6 freeze is _______C∘. (nearest integer value), (The molal freezing point depression constant of C6H6 is 5.12°C/m.)

Important Questions on Solutions

Learn and Prepare for any exam you want !

$C_{6} H_{6}$ freezes at $5.5 ° C .$ The temperature at which a solution of $10 g$ of $C_{4} H_{10}$ in $200 g$ of $C_{6} H_{6}$ freeze is _______ ${}^{\circ}C .$ (nearest integer value), (The molal freezing point depression constant of $C_{6} H_{6}$ is $5.12 ° C / m .$ )