Environmental Health — Flashcards

Flashcard 21: Primary school land requirement

Answer: 2 acres + 1 acre per 100 students

Flashcard 22: upper permissible limit for color of water is _____ TCU

Answer: 15

Extra: According to IS 10500 standards for drinking water: - Acceptable limit: 5 TCU - Permissible limit (in absence of alternate source): 15 TCU

Flashcard 23: disinfectant is put for _____ time in blood spill covered with paper

Answer: 20 mins

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Flashcard 24: _____ is the general microbiological indicator of water

Answer: E.coli

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Flashcard 25: mc route of lead toxicity is _____

Answer: inhalation

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Flashcard 26: chlorine levels should be _____ in safe water after contact time of 1 hour

Answer: >0.5 ppm

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Flashcard 27: 3323f70f79e14b3cbe3e2902781bf872-ao-4

Answer: sand filters

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Flashcard 28: hot air leads to _____ in relative humidity

Answer: decrease

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Flashcard 29: insecticide dust is useful for _____ mosquito

Answer: anopheles

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Flashcard 30: 609e056481f64927865c5657f343b82c-ao-2

Answer: septic tank excreta disposal method at unsewered areas

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