Topic Details (Notes format)

Colloids and Their Properties

Subject: General Science

Book: NCERT Chemistry Class 12

Study of mixtures with dispersed particles.
- **Types of Colloids**:
- Sols, gels, emulsions.
- **Tyndall Effect and Brownian Motion**:
- Scattering and random motion of particles.
- **Industrial Applications**:
- Paints, food products, medicines.

**Possible Exam Questions:**
1. What are colloids? Give examples.
2. Explain the Tyndall effect and its significance.
3. What is Brownian motion? How does it affect colloids?
4. How are colloids used in the food industry?
5. Discuss the role of colloids in the pharmaceutical industry.

Practice Questions

Which type of bond is present in sodium chloride?

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What is the chemical symbol for the element iron?

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Which of the following is a fundamental force in nature?

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Which organ is responsible for filtering blood in the human body?

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Which gas is used in fire extinguishers?

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Which part of the cell contains the genetic material?

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Which law states that energy cannot be created or destroyed?

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What is the chemical symbol for gold?

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What is the term for water changing from liquid to gas?

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