Scribd
Upload
161 views2 pages

K D Ambani Reliance Foundation School, Reliance Greens Session 2020-2021

This document contains a chemistry worksheet on solutions with 10 multiple choice questions covering various topics related to solutions. Some of the topics covered in the questions include: how molarity changes with temperature, boiling point elevation when adding a solute, freezing point depression when adding NaCl, diffusion through a semipermeable membrane, how Henry's constant changes with temperature, factors affecting oxygen concentration at high altitudes, positive deviations from Raoult's law, dependence of colligative properties on number of solute particles, solutions with the highest boiling point, and the term for constant boiling mixtures.

Uploaded by

Harsh Shah
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
161 views2 pages

K D Ambani Reliance Foundation School, Reliance Greens Session 2020-2021

This document contains a chemistry worksheet on solutions with 10 multiple choice questions covering various topics related to solutions. Some of the topics covered in the questions include: how molarity changes with temperature, boiling point elevation when adding a solute, freezing point depression when adding NaCl, diffusion through a semipermeable membrane, how Henry's constant changes with temperature, factors affecting oxygen concentration at high altitudes, positive deviations from Raoult's law, dependence of colligative properties on number of solute particles, solutions with the highest boiling point, and the term for constant boiling mixtures.

Uploaded by

Harsh Shah
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 2

K D Ambani Reliance Foundation School, Reliance Greens

Session 2020-2021
Chemistry – Worksheet-2 (MCQ)
Topic: Solutions
Name: _______________________ Date: ____________
Class: 12 Sec: ________ Roll No.: __________

Assertion and Reason Type Question-

Note: In the following questions, a statement of assertion followed by a statement of reason is given.
Choose the correct answer out of the following choices. (For Q1 to Q4)

(a) Assertion and reason both are correct statement and reason is correct explanation for
assertion.
(b) Assertion and reason both are correct statement but reason is not correct explanation
assertion.
(c) Assertion is correct statement but reason is wrong statement.
(d) Assertion and reason both are incorrect statement.
(e) Assertion is wrong statement but reason is correct statement.
Q. 1 Assertion : Molarity of solution in liquid state changes with temperature

Reason: The volume of a solution changes with change in temperature.

Q. 2
Assertion: When methyl alcohol is added to water, boiling point of water increases.
Reason: When a volatile solute is added to a volatile solvent, elevation in boiling point is observed.

Q. 3 Assertion : When NaCl is added to water, a depression in freezing point is observed

Reason: The lowering of vapour pressure of solution causes depression in the freezing point.

Assertion: When a solution is separated from the pure solvent by a semipermeable membrane, the
Q. 4 solvent molecules pass through it from pure solvent to the solution side.

Reason: Diffusion of solvent occurs from a region of high concentration solution to a region of low
concentration solution.

Value of Henry’s constant KH ……………..


Q. 5
(a) increases with increase in temperature
(b) decrease with increase in temperature
(c) remains constant
(d) first increase then decreases

Q. 6 Low concentration of oxygen in the blood and tissues of people living at high altitude is due
to…………….. .
(a) Low temperature (b) low atmospheric pressure
(c) high atmospheric pressure (d) both low temperature and high atmospheric pressure
Page 1 of 2
Considering the formation, breaking and strength of hydrogen bond, predict which of the following
Q. 7 mixtures will show a positive deviation from Raoult’s law?

(a) Methanol and acetone (b) Chloroform and acetone (c) Nitric acid and water (d) Phenol and
aniline

Colligative properties depend on:


Q. 8
(a) the nature of the solute particles dissolved in solution
(b) the number of solute particles in solution
(c) the number of solvent particles
(d) None of these

Q. 9 Which of the following aqueous solutions should have the highest boiling point?

(a) 1.0 M NaOH (b) 1.0 M Na2SO4 (c) 1.0 M NH4NO3 (d) 1.0 M KNO3

Q. 10 Constant boiling mixture are called :

(a) Ideal solution (b) Azeotropes (c) Isotonic (d) Zeotropes

Page 2 of 2

You might also like