Environmental Health — Flashcards

Flashcard 71: Incineration reduces the weight of waste by _____%

Answer: 75-80

Extra: Incineration reduces volume by ~90% and weight by 75-80%. The residual ash is approximately 20-25% of the original weight.

Flashcard 72: outer wall of school should be _____ thick

Answer: 10 inches

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Flashcard 73: _____ is liquid waste without fecal matter

Answer: sullage

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Flashcard 74: _____ are segregated into the Yellow category (e) of BMW

Answer: Discarded containers of chemicals and disinfectants

Flashcard 75: per child sitting area should not be <_____

Answer: 10 sq. feet

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Flashcard 76: AQI of <_____ means good air quality

Answer: 50

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Flashcard 77: chlorine level in a water tanker should be _____ ppm

Answer: 2-3

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Flashcard 78: sewage is _____

Answer: liquid waste with faecal matter 

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Flashcard 79: Water is stored for _____ in the sedimentation tank of a rapid sand filter

Answer: 2-6 hours

Flashcard 80: b0ea78eb314b441cb9f15880b58291d2-ao-2

Answer: excreta disposal in unsewered areas

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