CUET-UG SERIES

Chemistry

Solubility

3 previous year questions.

Volume: 3 Ques

Yield: Medium

High-Yield Trend

2

2024

1

2023

Chapter Questions
3 MCQs

01

PYQ 2023

medium

chemistry ID: cuet-ug-

For the solubility of gases in liquid, the correct statement at high temperature is: A) Solubility of gases increase B) Value of Hemy's constant () increases C) Solubility of gases decrease D) Value of decreases E) Value of does not change Choose the correct answer from the options given below:

1

A and D only

2

C and E only

3

A and B only

4

B and C only

02

PYQ 2024

medium

chemistry ID: cuet-ug-

Which of the following solvents is having its lowest Ebullioscopic constant? Solvent Boiling Point (K) Chloroform 334.4 Diethyl Ether 307.8 Benzene 353.3 Carbon disulphide 319.4 Choose the correct answer from the options given below:

1

Chloroform

2

Diethyl Ether

3

Benzene

4

Carbon disulphide

Official Solution

Correct Option: (2)

The ebullioscopic constant () of a solvent is indicative of how much its boiling point will increase when a solute is added to it. Generally, is dependent on the solvent's specific properties, but a general trend can be observed: the lower the boiling point, the lower the ebullioscopic constant. To determine which solvent has the lowest ebullioscopic constant, we will compare their boiling points. Solvent Boiling Point (K) Chloroform 334.4 Diethyl Ether 307.8 Benzene 353.3 Carbon Disulphide 319.4 Analyzing the boiling points of the provided solvents: Chloroform: 334.4 K Diethyl Ether: 307.8 K Benzene: 353.3 K Carbon Disulphide: 319.4 K Among these, Diethyl Ether has the lowest boiling point at 307.8 K. Therefore, it is expected to have the lowest ebullioscopic constant. Thus, the correct answer is Diethyl Ether .

03

PYQ 2024

medium

chemistry ID: cuet-ug-

Which of the following gases at 298 K and 1 atm pressure is having maximum solubility in water? (A) Methanal, K H = 0.000018 (B) Argon, K H = 40.3 (C) Methane, K H = 0.41 (D) CO 2, K H = 1.6 Choose the correct answer from the options given below:

1

Methanal

2

Argon

3

Methane

4

CO₂

Official Solution

Correct Option: (1)

To determine which gas has the maximum solubility in water at 298 K and 1 atm pressure, we consider the provided values of Henry's law constant, . Henry's law relates the solubility of a gas in a liquid to the partial pressure of the gas above the liquid, and it is given by: Solubility Thus, a lower value indicates higher solubility. Let's analyze the given options by their values: Gas (atm) Methanal 0.000018 Argon 40.3 Methane 0.41 CO 2 1.6 Among the options, Methanal has the lowest value of 0.000018 atm, indicating it has the maximum solubility in water. Therefore, the correct answer is: Methanal