Sterilisation & Disinfection Master Quiz

Froggy Jumps

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Test your knowledge on sterilisation and disinfection basics.

Créé par

Quader Ahmed Jalili

India

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Sterilisation & Disinfection Master Quiz


Froggy Jumps Sterilisation & Disinfection Master QuizVersion en ligne Test your knowledge on sterilisation and disinfection basics. par Quader Ahmed Jalili 1 What does sterilisation aim to achieve in terms of log reductions? a Reduction of ≥10^3 CFU b Reduction of ≥10^6 CFU c Reduction of ≥10^2 CFU 2 Which level of disinfectant can kill bacterial spores when used correctly? a High-level disinfectant b Low-level disinfectant c Antiseptic 3 Which sterilisation method uses moist heat to coagulate cellular proteins? a Steam sterilization (autoclave) b UV disinfection c Dry heat sterilization 4 What is a common indicator organism for autoclave efficacy? a Escherichia coli b Geobacillus stearothermophilus c Bacillus subtilis 5 Which device is used for sterilising heat-sensitive items via gas? a Ethylene oxide (ETO) sterilizer b Autoclave c UV chamber 6 Which sterilisation method is considered cold/low-temperature? a Ethylene oxide (ETO) b Steam autoclave c Dry heat oven 7 What is the main mechanism of aldehyde sterilants? a Cross-linking nucleic acids and proteins b Membrane disruption c Oxidation of cell walls 8 Which chemical is commonly used for glutaraldehyde activation? a 2% solution (Cidex) that activates b 70% ethanol c 0.5% CHG 9 What does sterilants’ efficacy testing include? a Only thermal tests b Only chemical indicators c Biological, chemical, and physical indicators 10 Filtration in hospitals primarily removes microorganisms rather than killing them; this is considered: a A sterilization method by some authorities b A cleaning method c A disinfection method only 11 Which filter size is typical for bacterial filtration in hospitals? a 0.8 µm b 5 µm c 0.22 µm 12 HEPA filters are mainly used to remove particles of at least what size? a 3 µm b 0.3 µm c 0.03 µm 13 Which radiation type provides cold sterilization without heat? a Infrared radiation b Ionizing gamma irradiation c UV radiation 14 Which is a primary disadvantage of plasma sterilization? a High heat exposure b Small chamber limits bulk items c Leaves toxic residues 15 Which method is used for routine surface disinfection in OT? a UV light only b Autoclaving OT surfaces c Aldehyde-based disinfectants 16 What is the main action of quaternary ammonium compounds (QAC)? a Damages DNA b Disrupts cell membranes c Denatures proteins outside cell 17 Which is NOT an action of low-level disinfectants? a Destroying enveloped viruses b Killing bacterial spores c Vegetative bacteria 18 Which gas is used in some sterilisation cycles for complex devices? a Hydrogen peroxide vapor b Chlorine dioxide c Ethylene oxide 19 Which chemical is known for being sporicidal at higher concentrations? a Hypochlorite (bleach) b Ethanol c Hydrogen peroxide 20 What is the role of Bowie-Dick test in sterilisation? a External indicator b Internal pack indicator c Biological indicator 21 Which sterilisation method is used for biomedical waste incineration? a Autoclaving b Filtration c Incineration at high temp 22 What is a key advantage of steam autoclaves? a High cost b Fast cycles c No compatibility with metals 23 Which indicator is best for autoclave biological control? a Spores of Geobacillus stearothermophilus b Lactobacillus acidophilus c Bacillus atrophaeus 24 Which surface cleaning sequence direction is recommended? a Side to side b Dirtier to cleaner c Cleaner to dirtier 25 What is the function of Bowie-Dick indicators? a Assess cleanliness after cleaning b Assess air/steam penetration in packs c Measure residue chemicals 26 Which agent is used for hand antisepsis with slower action but residual? a Povidone iodine (solution) b Chlorhexidine gluconate c Alcohol 27 What is the main disadvantage of formaldehyde as an HLD? a No odor b Non-irritant c Irritating fumes and carcinogenic potential 28 What is the primary mechanism of hydrogen peroxide in disinfection? a Physical scraping off microbes b Cross-links proteins c Generates hydroxyl radicals that damage cells 29 Which disinfection method is used for air disinfection in OT? a UV only without fogging b Fogging with glutaraldehyde or H2O2 c Direct boiling 30 Which of the following is true about UV disinfection? a Used for surfaces only, not air b Inactivates nucleic acids but not spores reliably c Kills spores effectively 31 Which material is least suitable for plasma sterilization? a Non-heat-sensitive metals b Rubber medical devices c Very moisture-sensitive items 32 What is Spaulding’s classification used for? a Classifies disinfectants by potency b Classifies medical devices by sterilisation needs c Classifies waste streams

Sterilisation & Disinfection Master Quiz

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Sterilisation & Disinfection Master QuizVersion en ligne

par Quader Ahmed Jalili

What does sterilisation aim to achieve in terms of log reductions?

Which level of disinfectant can kill bacterial spores when used correctly?

Which sterilisation method uses moist heat to coagulate cellular proteins?

What is a common indicator organism for autoclave efficacy?

Which device is used for sterilising heat-sensitive items via gas?

Which sterilisation method is considered cold/low-temperature?

What is the main mechanism of aldehyde sterilants?

Which chemical is commonly used for glutaraldehyde activation?

What does sterilants’ efficacy testing include?

Filtration in hospitals primarily removes microorganisms rather than killing them; this is considered:

Which filter size is typical for bacterial filtration in hospitals?

HEPA filters are mainly used to remove particles of at least what size?

Which radiation type provides cold sterilization without heat?

Which is a primary disadvantage of plasma sterilization?

Which method is used for routine surface disinfection in OT?

What is the main action of quaternary ammonium compounds (QAC)?

Which is NOT an action of low-level disinfectants?

Which gas is used in some sterilisation cycles for complex devices?

Which chemical is known for being sporicidal at higher concentrations?

What is the role of Bowie-Dick test in sterilisation?

Which sterilisation method is used for biomedical waste incineration?

What is a key advantage of steam autoclaves?

Which indicator is best for autoclave biological control?

Which surface cleaning sequence direction is recommended?

What is the function of Bowie-Dick indicators?

Which agent is used for hand antisepsis with slower action but residual?

What is the main disadvantage of formaldehyde as an HLD?

What is the primary mechanism of hydrogen peroxide in disinfection?

Which disinfection method is used for air disinfection in OT?

Which of the following is true about UV disinfection?

Which material is least suitable for plasma sterilization?

What is Spaulding’s classification used for?