JEE Main 2024 (Online) 1st February Morning Shift | Solutions Question 11 | Chemistry

1

JEE Main 2024 (Online) 1st February Morning Shift

MCQ (Single Correct Answer)

+4

-1

We have three aqueous solutions of $\mathrm{NaCl}$ labelled as ' $\mathrm{A}$ ', ' $\mathrm{B}$ ' and ' $\mathrm{C}$ ' with concentration $0.1 \mathrm{M}$, $0.01 \mathrm{M}$ and $0.001 \mathrm{M}$, respectively. The value of van 't Hoff factor(i) for these solutions will be in the order :

A

$\mathrm{i}_{\mathrm{A}}<\mathrm{i}_{\mathrm{C}}<\mathrm{i}_{\mathrm{B}}$

B

$\mathrm{i}_{\mathrm{A}}<\mathrm{i}_{\mathrm{B}}<\mathrm{i}_{\mathrm{C}}$

C

$\mathrm{i}_{\mathrm{A}}>\mathrm{i}_{\mathrm{B}}>\mathrm{i}_{\mathrm{C}}$

D

$\mathrm{i}_{\mathrm{A}}=\mathrm{i}_{\mathrm{B}}=\mathrm{i}_{\mathrm{C}}$

2

JEE Main 2024 (Online) 31st January Morning Shift

MCQ (Single Correct Answer)

+4

-1

Identify the mixture that shows positive deviations from Raoult's Law

A

$$\left(\mathrm{CH}_3\right)_2 \mathrm{CO}+\mathrm{CS}_2$$

B

$$\left(\mathrm{CH}_3\right)_2 \mathrm{CO}+\mathrm{C}_6 \mathrm{H}_5 \mathrm{NH}_2$$

C

$$\mathrm{CHCl}_3+\mathrm{C}_6 \mathrm{H}_6$$

D

$$\mathrm{CHCl}_3+\left(\mathrm{CH}_3\right)_2 \mathrm{CO}$$

3

JEE Main 2024 (Online) 31st January Morning Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	List - I (Technique)		List - II (Application
(A)	Distillation	(I)	Separation of glycerol from spent-lye
(B)	Fractional distillation	(II)	Aniline - Water mixture
(C)	Steam distillation	(III)	Separation of crude oil fractions
(D)	Distillation under reduced pressure	(IV)	Chloroform - Aniline

Choose the correct answer from the options given below:

A

A-I, B-II, C-IV, D-III

B

A-II, B-III, C-I, D-IV

C

A-IV, B-I, C-II, D-III

D

A-IV, B-III, C-II, D-I

4

JEE Main 2024 (Online) 30th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

The solution from the following with highest depression in freezing point/lowest freezing point is

A

$$180 \mathrm{~g}$$ of acetic acid dissolved in benzene

B

$$180 \mathrm{~g}$$ of acetic acid dissolved in water

C

$$180 \mathrm{~g}$$ of benzoic acid dissolved in benzene

D

$$180 \mathrm{~g}$$ of glucose dissolved in water