HARD

JEE Main

IMPORTANT

Earn 100

$1.22 g$ of an organic acid is separately dissolved in $100 g$ of benzene $(K_{b} = 2.6 K kg {mol}^{- 1})$ and $100 g$ of acetone $(K_{b} = 1.7 K kg {mol}^{- 1}) .$ The acid is known to dimerize in benzene but remain as a monomer in acetone. The boiling point of the solution in acetone increases by $0.17 ° C .$ The increase in boiling point of solution in benzene in ${}^{\circ}C$ is $x \times 10^{- 2} .$ The value of $x$ is (Nearest integer)
[Atomic mass : $C = 12.0, H = 1.0, O = 16.0$ ]

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Important Questions on Solutions

EASY

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 31 August 2021 Shift 1>Q 35

Which one of the following

0.10 M

aqueous solutions will exhibit the largest freezing point depression?

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 31 August 2021 Shift 1>Q 36

The molarity of the solution prepared by dissolving

6.3 g

of oxalic acid

(H_{2} C_{2} O_{4} \cdot 2 H_{2} O)

250 mL

of water in

mol L^{- 1}

x \times 10^{- 2} .

The value of

x

is _________ . (Nearest integer)
[Atomic mass :

H : 1.0, C : 12.0, 0 : 16.0 J

]

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 3 September 2020 Shift 2>Q 37

250 {cm}^{3}

of an aqueous solution containing

0.73 g

of a protein

A

is isotonic with one litre of another aqueous solution containing

1.65 g

of a protein

B,

298 K

, the ratio of the molecular masses of

A

and

B

___________\times 10^{- 2}

(to the nearest integer).

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 2nd April 2017>Q 39

The freezing point of benzene decreases by ${0.45}^{°} C$ on adding $0.2 g$ of acetic acid to $20 g$ of benzene. If acetic acid associates to form a dimer in benzene, then what is the percentage association of acetic acid in benzene?

$(K_{f} for benzene = 5 .12 K kg {mol}^{- 1})$

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 27 July 2021 Shift 1>Q 41

The density of

NaOH

solution is

1.2 g {cm}^{- 3} .

The molality of this solution is

m

(Round off to the Nearest Integer):
[Use : Atomic masses :

Na : 23.0 u O : 16.0 u

H : 1.0 u

Density of

H_{2} O : 1.0 g {cm}^{- 3}]

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 27 August 2021 Shift 2>Q 42

100 g

of propane is completely reacted with

1000 g

of oxygen. The mole fraction of carbon dioxide in the resulting mixture is

x \times 10^{- 2}

. The value of

x

is (Nearest integer)

MEDIUM

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 27 August 2021 Shift 2>Q 43

40 g

of glucose (Molar mass

= 180)

is mixed with

200 mL

of water. The freezing point of solution is

__K

. (Nearest integer)
[Given :

K_{f} = 1.86 K kg {mol}^{- 1};

Density of water

= 1.00 g {cm}^{- 3};

Freezing point of water

= 273.15 K]

HARD

JEE Main

IMPORTANT

EMBIBE CHAPTER WISE PREVIOUS YEAR PAPERS FOR CHEMISTRY>Chapter 8 - Solutions>JEE Main - 27 August 2021 Shift 1>Q 44

1 kg

0.75

molal aqueous solution of sucrose can be cooled up to

- 4 ° C

before freezing. The amount of ice (in

g

) that will be separated out is ___________. (Nearest integer) [Given :

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

]

Important Questions on Solutions

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