Environmental Health — Flashcards

Flashcard 141: Maximum allowed water turbidity is _____ NTU

Answer: 5

Extra: According to BIS standards (IS 10500:2012): - Acceptable limit: 1 NTU - Permissible limit (Maximum allowed): 5 NTU

Flashcard 142: coliform test is done to check _____ in water

Answer: E.coli

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Flashcard 143: there should be 1 latrine for every _____ students in school

Answer: 100

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Flashcard 144: Parameters of Effective Temperature (ET) are:

Answer: 1. Air temperature 2. Humidity 3. Air movement

Extra: Effective temperature (ET) is a composite index that combines the effects of temperature, humidity, and air movement. Note: If radiant heat (Globe thermometer) is also included, it is called **Corrected Effective Temperature (CET)**. Cooling power of air is a separate measurement taken by a Kata thermometer.

Flashcard 145: primary treatment at sewage treatment plant includes which stages

Answer: screening grit chamber primary sedimentation tank

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Flashcard 146: _____ are segregated into the Yellow category of BMW.

Answer: Discarded blood and PPE

Extra: Bio-Medical Waste Management Rules 2016.

Flashcard 147: 125d773b33354caf968a6f58399e48a9-ao-2

Answer: day light factor

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Flashcard 148: 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 149: Effective size of sand in **rapid sand filter** is _____ mm and in **slow sand filter** is _____ mm

Answer: 0.4-0.7

Flashcard 150: deep burial method is used for disposal of  _____ in area without CBWTF

Answer: infectious anatomical waste

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