1. A health worker asks villagers to keep food covered, wash fruits before eating, and drink clean water. Which common route of disease transmission is being targeted through these measures?

2. A child receives all the recommended vaccines according to the immunisation schedule. Months later, the child is exposed to one of the disease-causing organisms covered by the vaccine but does not develop the disease. What is the most appropriate explanation?

3. A science exhibition displays the contribution of Edward Jenner. Which achievement should be highlighted in the exhibit?

4. A doctor explains that two patients have infections. One is caused by bacteria and the other by viruses. Why would antibiotics be prescribed for only one of them?

5. A patient stops taking prescribed antibiotics as soon as the symptoms improve. After a few weeks, the infection returns and is harder to treat. Which conclusion best explains this situation?

6. A doctor advises one patient to improve eating habits, exercise regularly, and reduce stress instead of prescribing medicines immediately. Which type of disease is the doctor most likely trying to prevent or manage?

7. During a disease outbreak, a school plans the following actions: I. Encourage students with symptoms to stay at home. II. Ensure regular handwashing. III. Eliminate stagnant water on the school campus. Which statement best describes this plan?

8. A community health survey reports the following observationsI. Children are fully vaccinated.II. Safe drinking water is available.III. The locality is kept clean.IV. People frequently take antibiotics without medical advice.Which observation should be addressed most urgently to reduce future health risks?

9. Which lifestyle change is directly suggested to lower the risk of obesity and related disorders?

10. What public health measure most effectively prevents water- and vector-borne diseases?