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Disease - Definition and Types - UNSOLVED PRACTICE SET

Class 9

Chapter: Why Do We Fall Ill | Topic: Disease Definition and Types

Study Material.
Class 9

DISEASE - DEFINITION AND TYPES - UNSOLVED PRACTICE SET

Topic: Disease Definition and Types

Time: 45 mins | Marks: 31 | Difficulty: Medium

Multiple Choice Questions

Q1. Which of the following best describes a 'disease'?

  1. Any condition that causes pain
  2. Any condition that interferes with the normal functioning of the body or mind
  3. Any condition that requires a doctor's visit
  4. Any condition caused by germs

Q2. A disease that is present from birth due to genetic factors is called:

  1. An acquired disease
  2. A congenital disease
  3. An infectious disease
  4. A deficiency disease

Q3. Which of these is an example of a deficiency disease?

  1. Malaria
  2. Scurvy
  3. Tuberculosis
  4. Typhoid

Q4. Diseases that develop after birth due to infection, lifestyle, or environment are called:

  1. Congenital diseases
  2. Acquired diseases
  3. Hereditary diseases
  4. Genetic diseases

Q5. A child is born with a hole in the heart. Another child develops pneumonia after getting wet in the rain. The difference between these two is that:

  1. Both are infectious diseases
  2. The first is congenital, the second is acquired
  3. Both can be prevented by vaccines
  4. Both are caused by pathogens

Short Answer Questions

Q6. Define disease. Differentiate between a 'symptom' and a 'sign' of a disease with one example of each.

Q7. Classify diseases into two broad categories based on when they appear in life. Give two examples of each category.

Q8. What are deficiency diseases? Name two deficiency diseases and mention the specific nutrient whose lack causes each.

Q9. Your grandmother says, "All diseases are caused by germs." Is she correct? Explain why some diseases have nothing to do with germs, giving two examples.

Long Answer Questions

Q10. Draw a flow chart in words (or describe a classification chart) showing how diseases can be classified. Cover: congenital vs acquired; infectious vs non-infectious; acute vs chronic. Give one example for each category and explain why it belongs there.

Q11. "Knowing the type of disease helps doctors choose the right treatment." Explain this statement by comparing how a congenital heart defect, a bacterial infection like typhoid, and a deficiency disease like scurvy would each be treated differently.

APPLICATION / ANALYSIS

Q12. Case Study โ€” School Health Camp:

During a health camp in a government school in Uttar Pradesh, the doctor found these cases:

StudentConditionDuration
Priya (age 6)Cleft lip since birthSince birth
Rahul (age 12)Swollen abdomen, thin limbs6 months
Ayesha (age 14)Fever, cough, weakness5 days
Deepak (age 10)Bleeding gums, loose teeth3 months
Kiran (age 13)Difficulty breathing, using inhalerSince age 5

Answer the following:

(a) Classify each student's condition as congenital, deficiency, acute, or chronic. 

(b) Which student has a condition that could have been prevented by a better diet? Name the missing nutrient. 

(c) Why is Kiran's condition classified as chronic rather than acute? What does this tell us about long-term management of such diseases?

Q13. Real-Life Application โ€” Community Health Data:

A PHC (Primary Health Centre) in rural Karnataka recorded these cases in one month:

40 cases of viral fever (recovered in 3โ€“5 days)

25 cases of night blindness in children

15 cases of diabetes in adults (ongoing for years)

10 children born with genetic blood disorders

30 cases of worm infestation

Answer the following:

(a) Separate these cases into congenital, deficiency, acute, and chronic categories.

(b) Which category of diseases places the heaviest long-term burden on the PHC? Why?

(c) If you were the village health worker, which ONE problem would you tackle first through education, and why?


Total: 31 Marks | Time: 45 mins

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