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: 609e056481f64927865c5657f343b82c-ao-4

Answer: septic tank excreta disposal method at unsewered areas

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Flashcard 74: per child sitting area should not be <_____

Answer: 10 sq. feet

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Flashcard 75: _____ are segregated into the Yellow category (e) of BMW

Answer: Discarded containers of chemicals and disinfectants

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

Answer: 2-6 hours

Flashcard 79: sewage is _____

Answer: liquid waste with faecal matter 

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Flashcard 80: cool air leads to _____ in relative humidity

Answer: increase

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