Environmental Health — Flashcards

Flashcard 211: The optimum illumination required in a casual reading is _____ lux.

Answer: 100

Flashcard 212: The Horrock s Apparatus is used in disinfection of wells to find out how much _____ is required.

Answer: bleaching powder

Flashcard 213: Used masks, tissues, or swabs contaminated with blood or body fluids of COVID-19 patients, and discarded medicines, should be discarded in the _____ bag.

Answer: yellow

Extra: According to Bio-medical Waste (BMW) Management Rules: - **Yellow Bag**: Soiled waste (masks, tissues, swabs, bandages), anatomical waste, discarded medicines, chemical waste. - **Red Bag**: Contaminated plastic/rubber waste (gloves, syringes without needles, IV sets, catheters). - **White (Puncture-proof)**: Sharps (needles, syringes with fixed needles, scalpels). - **Blue**: Glassware and metallic implants. *Note: In COVID-19 waste management, double bagging was recommended, but the categorization of items (e.g., gloves in red, masks in yellow) remained consistent with standard BMW rules.*

Flashcard 214: _____ is the most effective form of chlorine for water disinfection.

Answer: Hypochlorous acid

Flashcard 215: The Horrock s Apparatus is used to estimate the _____ of water.

Answer: chlorine demand

Flashcard 216: The point at which the chlorine demand of water is met is called the _____

Answer: breakpoint

Flashcard 217: What is the first method of choice for chlorination?_____

Answer: Chlorine gas

Flashcard 218: Head cap and shoe cover from PPE must be disposed in the _____ bin

Answer: yellow

Flashcard 219: Special equipment called _____ is used to dig a borehole latrine

Answer: auger

Flashcard 220: What is the amount of residual chlorine (in ppm) required to kill cyclops?

Answer: 2 ppm