Why Do We Fall Ill (9 Science)
Health is a state of complete physical, mental, and social well-being. Diseases are caused by pathogens like bacteria, viruses, and fungi, and can be preve
TL;DR: Health is a state of complete physical, mental, and social well-being. Diseases are caused by pathogens like bacteria, viruses, and fungi, and can be…
Written & reviewed by the Syllab.in Academic Team (CBSE/NCERT subject experts) · Updated
Health is a state of complete physical, mental, and social well-being. Diseases are caused by pathogens like bacteria, viruses, and fungi, and can be preve
Why Do We Fall Ill MCQs with Answers & Explanations
Q1. Which of the following is NOT a characteristic of a healthy person?
- Good physical fitness
- Mental stress and anxiety ✓ (correct)
- Social well-being
- Good immunity
Q2. Communicable diseases are transmitted through:
- Genes only
- Pathogens via direct or indirect contact ✓ (correct)
- Poor nutrition
- Genetic defects
Q3. Which pathogen causes tuberculosis (TB)?
- Virus
- Bacterium ✓ (correct)
- Protozoan
- Fungus
Q4. Polio is a disease caused by:
- Bacteria
- Virus ✓ (correct)
- Fungus
- Protozoan
Q5. Which of the following helps our body fight infections?
- Pathogens
- Toxins
- White blood cells
- Antibodies ✓ (correct)
Q6. A disease spread by mosquitoes is:
- Tuberculosis
- Typhoid
- Malaria ✓ (correct)
- Tetanus
Q7. Which vaccination prevents measles?
- MMR vaccine ✓ (correct)
- Polio vaccine
- BCG vaccine
- Typhoid vaccine
Q8. Antibiotics are effective against:
- Viral infections
- Bacterial infections ✓ (correct)
- All diseases
- Fungal infections only
Q9. Which of the following is a non-communicable disease?
- Chicken pox
- Typhoid
- Diabetes ✓ (correct)
- Cholera
Q10. Personal hygiene includes:
- Drinking contaminated water
- Not washing hands
- Regular bathing and clean clothes ✓ (correct)
- Sharing toothbrushes
Frequently Asked Questions
What is the difference between acute and chronic diseases?
Acute diseases develop suddenly and last for a short period (e.g., cold, flu), while chronic diseases develop slowly and persist for a long time (e.g., diabetes, heart disease).
How does vaccination provide immunity against diseases?
Vaccination introduces a weakened or inactive form of a pathogen (or its antigen) into the body, stimulating the immune system to produce antibodies without causing the disease, providing long-term protection.
More 9 Science MCQs
- Light Reflection and Refraction
- Electricity
- Acids Bases and Salts
- Life Processes
- Carbon and its Compounds
- Metals and Non-metals
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