Subject: General Science
Book: NCERT Science Class 9
Health is a state of complete physical, mental, and social well-being.
- **Types of Diseases**:
- Infectious diseases (caused by pathogens like bacteria, viruses).
- Non-infectious diseases (caused by lifestyle or genetic factors).
- **Prevention of Diseases**:
- Vaccination, hygiene, balanced diet.
- **Immunity**:
- The body’s defense mechanism against diseases.
**Possible Exam Questions:**
1. What is the difference between infectious and non-infectious diseases?
2. Explain how vaccines help prevent diseases.
3. How do bacteria and viruses cause diseases?
4. What is the role of immunity in disease prevention?
5. Discuss the impact of hygiene on public health.
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View QuestionWhich metal is liquid at room temperature?
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View QuestionWhat type of electromagnetic radiation has the longest wavelength?
View QuestionWhich of the following is a fundamental force in nature?
View QuestionWhich gas is commonly used in balloons to make them float?
View QuestionWhich process converts glucose into energy in the human body?
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