Question

Depending on the duration, the diseases are classified as:
i) Acute
ii)Chronic
iii)Infectious
iv)Non-infectious

• A. i) & iv)
• B. ii) & iii)
• C. i) & ii)
• D. ii) & iv)

Answer 1

The correct option is C i) & ii)

Depending upon the duration of the disease, diseases could be classified into two main categories - Acute and Chronic.
Acute diseases lasts for a short duration of time. These affect the body suddenly and progress quickly but the duration of these effects is less. e.g., common cold, flu.
Chronic diseases can last for a longer duration of time varying from months or years to as much as life time. These affect the health and organs of the body. e.g., tuberculosis, elephantiasis, hepatitis A.
When the immediate cause of the disease is a pathogen, it is known as infectious disease. e.g. cholera
When the cause of a disease is not any pathogen and it is due to some internal factor, then such disease is called as non-infectious. e.g. cancer