According to Indian standards for adequate lighting and ventilation of dwelling houses, the total window area should be at least what fraction of the floor area of the room?
- A One-fifth ✓
- B One-tenth
- C Two-fifths
- D One-half
Correct answer: A. One-fifth
Explanation
For adequate natural light and ventilation, Indian housing standards require that windows and ventilators together have an area equal to at least one fifth of the floor area of the room. One tenth is inadequate and would produce a dark, poorly ventilated dwelling, while two fifths and one half exceed the requirement and are distractors drawn from no standard. This figure appears alongside requirements on floor space per person and cubic capacity in the healthy housing criteria.
Reference: Park's Textbook of Preventive and Social Medicine, 26th ed.
High-yield for: NEET PGINI-CETNExTFMGEUSMLEPLABMRCP
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