Liquids Quiz - CBSE Class 12 Chemistry

Free practice quiz: Liquids (CBSE Class 12 Chemistry). 18 multiple-choice questions with answers and explanations. Play online, no sign-up needed.

This CBSE Class 12 Chemistry practice quiz has 18 multiple-choice questions on Liquids, and 18 of them come with an explanation. Try the 5 sample questions below (tap an option to check yourself), then play the full quiz online. No sign-up needed.

Sample questions

1. Which of the following properties is NOT characteristic of liquids?

   1. Definite volume
   2. Indefinite shape
   3. High compressibility
   4. Intermolecular forces
   Show answer

   Answer: C. High compressibility

   Liquids have a definite volume but take the shape of their container. They are relatively incompressible due to the close proximity of their molecules.

2. What is the effect of temperature on the viscosity of a liquid?

   1. Viscosity increases with increasing temperature
   2. Viscosity decreases with increasing temperature
   3. Viscosity remains unchanged with increasing temperature
   4. Viscosity is independent of temperature
   Show answer

   Answer: B. Viscosity decreases with increasing temperature

   Higher temperatures provide more kinetic energy to overcome intermolecular forces, thus reducing resistance to flow and lowering viscosity.

3. Explain the role of hydrogen bonding in the properties of water.

   1. Hydrogen bonding makes water less dense as a solid
   2. Hydrogen bonding makes water more volatile
   3. Hydrogen bonding lowers the boiling point of water
   4. Hydrogen bonding increases the viscosity of water
   Show answer

   Answer: A. Hydrogen bonding makes water less dense as a solid

   Hydrogen bonds in ice create a more open structure compared to liquid water, leading to lower density.

4. Which property of liquids is responsible for the formation of meniscus in a capillary tube?

   1. Viscosity
   2. Vapor pressure
   3. Surface tension
   4. Boiling point
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   Answer: C. Surface tension

   The meniscus is formed due to the balance between adhesive and cohesive forces which are related to the surface tension.

5. Explain why liquids are less compressible than gases.

   1. Liquids have stronger intermolecular forces
   2. Liquids have higher densities
   3. Liquids have lower kinetic energies
   4. Liquids are composed of larger molecules
   Show answer

   Answer: A. Liquids have stronger intermolecular forces

   The close proximity of molecules in liquids, due to stronger intermolecular forces, leaves little space for compression compared to gases.

More questions in this quiz

Answers and explanations are in the full quiz.

1. What is surface tension?
2. Explain the phenomenon of viscosity in liquids.
3. What is vapor pressure?
4. How does the intermolecular forces affect the boiling point of a liquid?
5. Describe the phenomenon of capillary action.
6. Discuss the relationship between surface tension, viscosity, and intermolecular forces in liquids. How do these properties relate to the structure and behavior of liquids at the molecular level?
7. A liquid X has a higher boiling point than liquid Y. Which liquid likely has stronger intermolecular forces?
8. How does the presence of impurities affect the boiling point of a liquid?
9. What is the relationship between the rate of evaporation and vapor pressure?
10. Two liquids A and B have the same molecular weight but different boiling points. What accounts for the difference?
11. What is the effect of pressure on the boiling point of a liquid?
12. Explain why water has a relatively high boiling point compared to other liquids of similar molecular weight.
13. How does the concept of enthalpy of vaporization relate to intermolecular forces in liquids?

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