Topic: Vapour Pressure of Liquid Solutions Mock Test, Test No.: 01, Total MCQs: 10
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We hope the given Chemistry MCQs for Class 12 with Answers Chapter 2 Solutions will help you. If you have any query regarding CBSE Class 12 Chemistry Solutions MCQs Pdf, drop a comment below and we will get back to you at the earliest.
- Question 1 of 7
Which of the following condition is not satisfied by an ideal solution?
(a) ΔHmixing = 0
(b) ΔVmixing = 0
(c) Raoult’s Law is obeyed
(d) Formation of an azeotropic mixture
- Question 2 of 7
The boiling point of an azeotropic mixture of water and ethanol is less than that of water and ethanol. The mixture shows
(a) no deviation from Raoult’s Law.
(b) positive deviation from Raoult’s Law.
(c) negative deviation from Raoult’s Law.
(d) that the solution is unsaturated.
- Question 3 of 7
Partial pressure of a solution component is directly proportional to its mole fraction. This is known as
(a) Henry’s law
(b) Raoult’s law
(c) Distribution law
(d) Ostawald’s dilution law
- Question 4 of 7
3 moles of P and 2 moles of Q are mixed, what will be their total vapour pressure in the solution if their partial vapour pressures are 80 and 60 torr respectively?
(a) 80 torr
(b) 140 torr
(c) 70 torr
(d) 72 torr
Hint: The vapour pressure liquids are related to their mole fraction in the solution by the relation given by the Raoult’s Law which states that the vapour pressure of a solution is equal to the product of the vapour pressure of the solution multiplied by the mole fraction of the solute in the solution.
- Question 5 of 7
Which of the following solutions shows positive deviation from Raoult’s law?
(a) Acetone + Aniline
(b) Acetone + Ethanol
(c) Water + Nitric acid
(d) Chloroform + Benzene
- Question 6 of 7
Which of the following units is useful in relating concentration of solution with its vapour pressure?
(a) Mole fraction
(b) Parts per million
(c) Mass percentage
- Question 7 of 7
Considering the formation, breaking and strength of hydrogen bond, predict which of the following 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.
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