Environmental Health — Flashcards

Flashcard 151: The **comfortable** relative humidity ranges from _____%

Answer: 35-65

Flashcard 152: DDT has a residual effect of _____

Answer: 10-12 weeks

Extra: DDT (50% WP) is used for Indoor Residual Spray (IRS) at a dose of 1 g/m². According to NVBDCP guidelines, its residual effect lasts for 10-12 weeks (Park mentions 6-10 weeks).

Flashcard 153: Effective size of sand in **rapid sand filter** is _____ mm and in **slow sand filter** is _____ mm

Answer: 0.4-0.7

Flashcard 154: height of a house window should be _____ from the ground

Answer: <3 feet

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Flashcard 155: deep burial method is used for disposal of  _____ in area without CBWTF

Answer: infectious anatomical waste

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Flashcard 156: Bio-Medical Waste (BMW) management in India is overseen by the _____.

Answer: Central Pollution Control Board (CPCB)

Flashcard 157: 609e056481f64927865c5657f343b82c-ao-1

Answer: septic tank excreta disposal method at unsewered areas

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Flashcard 158: red category includes _____ waste

Answer: rubber, tube and plastic

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Flashcard 159: f88ddafee050488590dfb35b04ed01d4-ao-6

Answer: safe water qualities

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Flashcard 160: instrument:_____ Use:_____

Answer: anemometer

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