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Test: Ideal Solutions - NEET MCQ


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10 Questions MCQ Test Chemistry Class 12 - Test: Ideal Solutions

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

Solutions which show positive or negative deviation from the Raoult’s law are called

Detailed Solution for Test: Ideal Solutions - Question 1

Solutions that show a deviation from Raoult's law are called non-ideal solutions because they deviate from the expected behavior. Very few solutions actually approach ideality, but Raoult's law for the ideal solution is a good enough approximation for the non- ideal solutions.

Test: Ideal Solutions - Question 2

 Which of the following components form an ideal solution?

Detailed Solution for Test: Ideal Solutions - Question 2

The correct answer is option D
The solutions which obey Raoult's law over the entire range of concentration are known as ideal solutions.
For ideal solution, the enthalpy of mixing of the pure components to form the solution is zero and the volume of mixing is also zero, i.e.,
mix​H=0 and △mix​V=0
Thus, this type of solution is a solution of benzene and toluene.

Test: Ideal Solutions - Question 3

According to Raoult’s law the partial vapour pressure of each component in the solution is directly proportional to its

Detailed Solution for Test: Ideal Solutions - Question 3

The correct option is B.

According to Raoult's law; the partial vapour pressure of each component of an ideal mixture of liquids is equal to the vapour pressure of the pure component multiplied by its mole fraction in the mixture
So for solvent
P = PAoXA ; A→ solvent
P ∝ XA

Test: Ideal Solutions - Question 4

In a solution if the solute is non- volatile, p°A is the vapour pressure of pure solvent A and the mole fraction of A is xA , the vapour pressure of the solvent (pA) will be :

Detailed Solution for Test: Ideal Solutions - Question 4

The correct answer is option D
 
When a non - volatile solute is added into a volatile solvent to form an ideal solution. there will be a decrease in vapour pressure to that of solvent. According to roult's law the decrease in vapour is directly proportional to the mole fraction of solute in an ideal solution.
 

Test: Ideal Solutions - Question 5

 Which of the following solutions shows negative deviation from Raoult’s law?

Detailed Solution for Test: Ideal Solutions - Question 5

The correct answer is Option A.

(A – B) are stronger than the intermolecular interactions in A – A and B – B. 
For example, acetone and chloroform form a non-ideal solution showing negative deviation from Raoult's law. 
Volume of solution is less than the volume of solute and solvent.

Test: Ideal Solutions - Question 6

Ideal solution is formed when its components have

Test: Ideal Solutions - Question 7

 For a binary ideal solution, the total pressure of the solution is given as

Detailed Solution for Test: Ideal Solutions - Question 7

The correct option C
The partial vapour pressure of each component of the solution is directly proportional to its mole fraction present in isolation.
Thus, for component 1
p1 ∝ x1 
And  p1 = pо1 x1
Where pо1 is the vapour pressure of pure component 1 at the same temperature.
Similarly, for component 2
p2 = pо2 x2
Where pо2 represents the vapour pressure of the pure component 2.
According to Dalton’s law of partial pressure, the total pressure ptotal over the solution phase in the container will be the sum of the partial pressures of the components of the solution and is given as:
ptotal =p1 + p2
Substituting the values of  p1 and p2, we get.
ptotal = x1p10 + x2p20
=(1-x2)p10 + x2p20
=p10  +(p20 - p10) x2

Test: Ideal Solutions - Question 8

 When a non-volatile solute is dissolved in a solvent, the relative lowering of vapour pressure is equal to:

Detailed Solution for Test: Ideal Solutions - Question 8

The correct answer is option A
The vapor pressure of a solvent is lowered when a non-volatile solute is dissolved in it to form a solution. The vapor pressure lowering relative to pure solvent is , which is proportional to the mole fraction of solute.
 

Test: Ideal Solutions - Question 9

 Which of the following statements is correct, if the intermolecular force of attraction between the particles in liquid A, B, C is in the order A < B < C?

Detailed Solution for Test: Ideal Solutions - Question 9

Inter molecular interaction cause to evaporation. When inter molecular interaction high, their evaporation power decrease.

Test: Ideal Solutions - Question 10

Which of the following forms an ideal solution?

Detailed Solution for Test: Ideal Solutions - Question 10

The correct answer is option D
chlorobenzene and bromobenzene
This mixture has two substances that only have dipole-dipole forces to exchange, and they therefore form essentially ideal solutions.

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