Microbiology & Infection Control - Microbiology, Sterilisation & BMW MCQs with Answers

Answer: D. Yellow Bag

Black Bag: Black bags are used for non-infectious general waste, such as paper or wrappers, not biological waste like the placenta.
Yellow Bag: The yellow bag is used for anatomical waste, including the placenta, body tissues, and organs, as per biomedical waste management guidelines.
Red Bag: Red bags are for recyclable contaminated waste, such as gloves or IV tubing, not for anatomical waste.
Blue Bag: Blue bags are for metallic or glass waste, such as vials and needles, not biological waste.

Answer: D. Glutaraldehyde

Ammonium chloride: This is a compound commonly used in fertilizers, dry cell batteries, and as a cleaning agent. It is not related to Cidex.
Formaldehyde: Formaldehyde is a strong-smelling gas used in industrial applications and as a disinfectant. However, it is not the chemical component of Cidex.
Isopropyl chloride: This is an organic compound used in industrial processes, particularly in chemical synthesis, but it is unrelated to Cidex.
Glutaraldehyde (Correct Option): Glutaraldehyde is the active ingredient in Cidex, a high-level disinfectant used to sterilize medical instruments and devices that cannot withstand heat sterilization.

Answer: D. Yellow bag

Red bag: Red bags are used for contaminated, recyclable biomedical waste like gloves, IV tubing, and catheters, not for infected cotton with blood or bodily fluids.
Blue bag: Blue bags are meant for glassware or metallic waste, such as syringes or vials, not biological waste.
Yellow bag: The yellow bag is designated for infected waste, such as cotton with blood, body fluids, or anatomical waste, as per biomedical waste management guidelines.
Black bag: Black bags are for general non-hazardous waste, like paper or food wrappers, and are not suitable for biomedical waste.

Answer: B. Wash puncture site with soap and water

Wash puncture site with soap and water: The first and immediate step to reduce viral transmission risk and disinfect the area.
Start PEP treatment immediately: Post-exposure prophylaxis (PEP) should be started soon but only after washing the site.
Get a doctor appointment: Necessary but not the priority in an emergency situation.
Collect needle for laboratory check: While important for infection confirmation, this is secondary to immediate site cleaning.

Answer: D. Ethylene oxide gas

Ethylene oxide gas: Ethylene oxide gas is widely used to sterilize medical equipment and instruments sensitive to heat or moisture. Methylene oxide gas: This is not used for sterilization and is not a
recognized sterilizing agent. Methane gas: Methane is a flammable gas with no sterilization properties. Ethane gas: Ethane is a hydrocarbon used in industrial processes, not for sterilization.