JEE Main 2023 (Online) 29th January Evening Shift | Solutions Question 34 | Chemistry

1

JEE Main 2023 (Online) 29th January Evening Shift

MCQ (Single Correct Answer)

+4

-1

Match List I with List II

	List I		List II
A.	van't Hoff factor, i	I.	Cryoscopic constant
B.	$$\mathrm{k_f}$$	II.	Isotonic solutions
C.	Solutions with same osmotic pressure	III.	$$\mathrm{\frac{Normal\,molar\,mass}{Abnormal\,molar\,mass}}$$
D.	Azeotropes	IV.	Solutions with same composition of vapour above it

Choose the correct answer from the options given below :

A

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

B

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

C

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

D

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

2

JEE Main 2023 (Online) 24th January Morning Shift

MCQ (Single Correct Answer)

+4

-1

In the depression of freezing point experiment

A. Vapour pressure of the solution is less than that of pure solvent

B. Vapour pressure of the solution is more than that of pure solvent

C. Only solute molecules solidify at the freezing point

D. Only solvent molecules solidify at the freezing point

Choose the most appropriate answer from the options given below :

A

A and C only

B

A only

C

A and D only

D

B and C only

3

JEE Main 2022 (Online) 27th July Morning Shift

MCQ (Single Correct Answer)

+4

-1

Boiling point of a $$2 \%$$ aqueous solution of a non-volatile solute A is equal to the boiling point of $$8 \%$$ aqueous solution of a non-volatile solute B. The relation between molecular weights of A and B is

A

$$\mathrm{M}_{\mathrm{A}}=4 \mathrm{M}_{\mathrm{B}}$$

B

$$\mathrm{M}_{\mathrm{B}}=4 \mathrm{M}_{\mathrm{A}}$$

C

$$\mathrm{M}_{\mathrm{A}}=8 \mathrm{M}_{\mathrm{B}}$$

D

$$\mathrm{M}_{\mathrm{B}}=8 \mathrm{M}_{\mathrm{A}}$$

4

JEE Main 2022 (Online) 25th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

Two solutions A and B are prepared by dissolving 1 g of non-volatile solutes X and Y, respectively in 1 kg of water. The ratio of depression in freezing points for A and B is found to be 1 : 4. The ratio of molar masses of X and Y is

A

1 : 4

B

1 : 0.25

C

1 : 0.20

D

1 : 5