Topic Details (Notes format)

Circulatory System

Subject: General Science

Book: NCERT Biology Class 12

Study of blood circulation in humans.
- **Heart and Blood Vessels**:
- Structure and function.
- **Cardiac Cycle**:
- Systole and diastole.
- **Blood Groups and Transfusion**:
- ABO system and Rh factor.

**Possible Exam Questions:**
1. Explain the structure and working of the human heart.
2. What are the differences between arteries, veins, and capillaries?
3. Describe the cardiac cycle and its phases.
4. How do blood groups affect transfusion compatibility?
5. Discuss disorders like hypertension and atherosclerosis.

Practice Questions

What is the primary function of red blood cells (RBCs) in the human body?

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What is the chemical formula for carbon dioxide?

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Which is the largest planet in the Solar System?

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Which vitamin is responsible for blood clotting?

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Which gas is most abundant in Earth’s atmosphere?

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Which metal is liquid at room temperature?

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Which gas is commonly used in balloons to make them float?

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

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Which gas is known as "laughing gas"?

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What type of energy is stored in a stretched rubber band?

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