NCERT Important Questions Class 9 Science biology Chapter 13
Important NCERT Extra Questions
Chapter 13 Why do We Fall ill
NCERT Book Extra Questions for Session 2022-2023
CBSE Board and UP Board Others state Board
Give two examples for each of the following: (a) Acute diseases; (b) Chronic diseases; (c) Infectious diseases; (d) Non-infectious diseases.
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(a) Acute diseases. Typhoid, Malaria, Influenza
(b) Chronic diseases. Tuberculosis, Elephantiasis
(c) Infectious diseases. Typhoid, Chicken pox
(d) Non-infectious diseases. Diabetes, Goitre.