The effective temperature of the 'comfo zone' is-: (A) 69-76 o F, (B) 77-80 oF, (C) 83-85 oF, (D) 86-90 oF
Answer is B. Comfo zones: In deg C of corrected effective temperature Pleasant and cool 20 Comfoable and cool 20-25 Comfoable 25- 27 (77-80F) Hot and uncomfoable 27-28 Extremely hot 28+ Intolerably hot 30+. Park's Textbook of Preventive and Social Medicine, 25th Edition, Pg 792