Test: Vapour Pressure of Liquid Solutions (NCERT) - NEET MCQ

# Test: Vapour Pressure of Liquid Solutions (NCERT) - NEET MCQ

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## 5 Questions MCQ Test - Test: Vapour Pressure of Liquid Solutions (NCERT)

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

### 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?

Detailed Solution for Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 1

Ptotal = pP + pQ = pPxP + pQxQ
= 80 x 0.6 + 60 x 0.4 = 72 torr.

Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 2

### X, Y and Z in the given graph are

Detailed Solution for Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 2

Here, X = PT ​= p1 ​+ p2 ​= Total pressure of the solution.
p1 and p2 ​is the partial pressure of component 1 and 2 respectively.
Y = x2 ​= mole fraction of component 2 in the liquid phase.
Z = y2 ​= mole fraction of component 2 in the vapour phase.
When mole fraction of component 2 in the liquid phase is 0 then mole fraction of component 2 in the vapour phase is also 0 which means the liquid is pure of component 1 only.

Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 3

### Among the following substances, the lowest vapour pressure is exerted by

Detailed Solution for Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 3

Mercury is non-volatile.

Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 4

In three beakers labelled as (A), (B) and (C), 100mL of water, 100mL of 1M solution of glucose in water and 100mL of 0.5M solution of glucose in water are taken respectively and kept at same temperature.

Which of the following statements is correct?

Detailed Solution for Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 4

Vapour pressure of a solution containing non-volatile solute is less than that of the pure solvent. The decrease in vapour pressure depends upon the quantity of non-volatile solute present in it. Hence, vapour pressure of A > C > B.

Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 5

The given graph shows the vapour pressure-temperature curves for some liquids.

Liquids A, B, C and D respectively are

Detailed Solution for Test: Vapour Pressure of Liquid Solutions (NCERT) - Question 5

The vapour pressure increases with decrease in intermolecular forces. When the forces are weak, the liquid has high volatility and maximum vapour pressure. Diethyl ether has highest vapour pressure while water has lowest vapour pressure.

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