Class 12 Chemistry Chapter 2 Solutions MCQs

Class 12 chemistry MCQs with answers are provided here for chapter 2 Solutions. These MCQs are based on the CBSE board curriculum and correspond to the most recent Class 12 chemistry syllabus. By practising these Class 12 Multiple choice questions, students will be able to quickly review all of the ideas covered in the chapter and prepare for the Class 12 Annual examinations as well as other entrance exams such as NEET and JEE.

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Class 12 Solutions MCQs

1. The volume occupied by a single gas in a mixture at the same temperature and pressure is referred to as the single-gas volume.

a) Absolute volume

b) Partial volume

c) Total volume of a gas mixture

d) None of the mentioned

Answer: b

Explanation: At the same temperature and pressure, the volume occupied by a single gas alone in a combination is a portion of a volume.

2. The pressure that a single component in a gaseous mixture would exert if it existed alone in the same volume as the mixture and at the same temperature as the mixture is referred to as.

a) Absolute pressure

b) Partial pressure

c) Total pressure of a gas mixture

d) None of the mentioned

Answer: b

Explanation: Partial pressure is the pressure exerted by a single component in a gaseous mixture if it exists alone in the same volume.

3. ________________ _ obeys Raoult’s law in all stages of concentration.

a) Ideal Solution

b) Non-Ideal solution

c) Real Solution

d) None of the mentioned

Answer: a

Explanation: At all concentration levels, Ideal Solution follows Raoult’s law.

4. When two perfect solutions with volume V each are combined, What is the volume of the solution as a result?

a) V

b) 2V

c) Greater than 2V

d) Less than 2V

Answer: b

Explanation: When two perfect solutions are mixed, there is no change in volume.

5. The heat of solution or mixing has a negative side.

a) Heat of solution

b) Heat of dissolution

c) Heat of reaction

d) Heat of mixing

Answer: b

Explanation: The heat of solution or mixing has a negative side. Dissolution’s heat.

6. A solution made up of numerous components in which each component’s property is the weighted sum of its separate properties. The answer is

a) Ideal Solution

b) Non-Ideal solution

c) Real Solution

d) None of the mentioned

Answer: a

Explanation: An ideal solution is made up of numerous components, each of which has a property that is the weighted sum of the attributes of the others.

7. What is an example of camphor in N2 gas?

a) Solid in gas solution

b) Gas in gas solution

c) Solid in liquid solution

d) Liquid in gas solution

Answer: a

Explanation: Solid in gaseous solution is an example of camphor in N2 gas. Gaseous solution refers to a solution in which the solvent is gaseous. Other gaseous solutions include air (O2 + N2), iodine vapors in air, humidity in air, and so on.

8. What happens when a solute crystal is added to a supersaturated solution?

a) It becomes a colloidal solution

b) The solute dissolves in the solution

c) The solution desaturates

d) The solute precipitates out of the solution

Answer: d

Explanation: Solute particles leave the solution and form a crystalline precipitate when a solute crystal is added to a supersaturated solution. Seeding refers to the addition of the solute crystal.

9. Which of the following options is not a viable option?

a) Brass

b) Bronze

c) Hydrated salts

d) Aerated drinks

Answer: d

Explanation: A solid solution is a one- or more-solute solid-state solution in a solvent. Solid solutions include brass, bronze, and hydrated salts. Liquid solutions include aerated beverages.

10. What makes a solution?