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Test: Ideal and Non-Ideal Solutions (NCERT) - NEET MCQ


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10 Questions MCQ Test Chemistry Class 12 - Test: Ideal and Non-Ideal Solutions (NCERT)

Test: Ideal and Non-Ideal Solutions (NCERT) for NEET 2024 is part of Chemistry Class 12 preparation. The Test: Ideal and Non-Ideal Solutions (NCERT) questions and answers have been prepared according to the NEET exam syllabus.The Test: Ideal and Non-Ideal Solutions (NCERT) MCQs are made for NEET 2024 Exam. Find important definitions, questions, notes, meanings, examples, exercises, MCQs and online tests for Test: Ideal and Non-Ideal Solutions (NCERT) below.
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Test: Ideal and Non-Ideal Solutions (NCERT) - Question 1

For an ideal solution with pA > pB, which of the following is true?

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 1

Since the vapor pressure of A is more than B so the mole fraction of A is more in vapor phase than liquid phase as A is more volatile hence vapor phase would be richer in A. Thus the correct option is (xA)liquid < (xB)Vapor

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 2

What are the conditions for an ideal solution which obeys Raoult's law over the entire range of concentration?

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 2

For an ideal solution, ΔH and Delta ΔV for mixing should be zero. PTotal = pA + pB and A − A, B − B and A − B interactions are nearly same.

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 3

Intermolecular forces between n-hexane and n-heptane are nearly same as between hexane and heptane individually. When these two are mixed, which of the following is not true about the solution formed?

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 3

Azeotropes are formed by the solutions which show deviations from ideal behaviour.

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 4

Which of the following solutions shows positive deviation from Raoult's law?

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 4

Acetone + ethanol is an example of solutions showing positive deviation from Raoult's law. Since acetone-ethanol attractions are weaker than acetone - acetone and ethanol-ethanol attractions.

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 5

Which of the following solutions is an example of negative deviation from Raoult's law?

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 5

CH3COCH3 + CHCl3 is an example of solution showing negative deviation from Raoult's law since A-B attractions (acetone + chloroform) are more than A - A (acetone -acetone) and B - B( chloroform-chloroform) attractions.

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 6

Study the figures given below and mark the correct statement.

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 6

Acetone + ethyl alcohol solution shows positive deviation while acetone + chloroform shows negative deviation.
Other examples:
Positive deviations - Acetone + ethyl alcohol,
acetone + benzene, water + ethyl alcohol
Negative deviations - Nitric acid + water,
benzene + chloroform

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 7

When acetone and chloroform are mixed together, hydrogen bonds are formed between them. Which of the following statements is correct about the solution made by mixing acetone and chloroform?

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 7

When acetone and chloroform are mixed together, hydrogen bonds are formed between them which increases intermolecular interactions hence decreases the vapour pressure showing negative deviation.

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 8

Given below are few mixtures formed by mixing two components. Which of the following binary mixtures will have same composition in liquid and vapour phase?
(i) Ethanol + Chloroform
(ii) Nitric acid + Water
(iii) Benzene + Toluene
(iv) Ethyl chloride + Ethyl bromide

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 8

(iii) and (iv) will form ideal solutions hence do not form azeotropes. Azeotropes have same composition in liquid and vapour form when distilled.

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 9

When acetone and chloroform are mixed together, which of the following observations is correct?

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 9

When acetone and chloroform are mixed together, a hydrogen bond is formed between them which increases intermolecular interactions. Hence, A − B interactions are stronger than A − A and A − B interactions.

Test: Ideal and Non-Ideal Solutions (NCERT) - Question 10

The system that forms maximum boiling azeotrope is

Detailed Solution for Test: Ideal and Non-Ideal Solutions (NCERT) - Question 10

Due to stronger intermolecular interactions in acetone and chloroform lesser number of molecules vaporise resulting in low vapour pressure and high boiling point.

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