JEE Main 2024 (Online) 1st February Morning Shift | Solutions Question 10 | Chemistry | JEE Main - ExamSIDE.com

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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) 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

4

JEE Main 2024 (Online) 30th January Morning Shift

MCQ (Single Correct Answer)

+4

-1

What happens to freezing point of benzene when small quantity of napthalene is added to benzene?

A

Increases

B

Decreases

C

Remains unchanged

D

First decreases and then increases

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