WorksheetsSet 3 MCQs - Applied Community Medicine
Total questions: 30
Worksheet time: 30mins
In an outbreak investigation of Candida auris in ICU, which environmental decontamination agent has the highest proven efficacy?
Sodium hypochlorite 0.5%
Quaternary ammonium compounds
Hydrogen peroxide vapor
Phenolic compounds
Which is the strongest predictor of catheter-associated urinary tract infection (CAUTI) incidence in ICU?
Duration of catheterization
Catheter material type
Frequency of urine sampling
Nurse-to-patient ratio
In a negative pressure airborne infection isolation room, the recommended air changes per hour (ACH) is:
6
8
12
20
Which WHO '5 Moments for Hand Hygiene' step is most commonly missed by healthcare workers in ICUs globally?
Before touching a patient
Before aseptic procedure
After body fluid exposure risk
After touching patient surroundings
For N95 respirator fit testing, the gold standard method is:
Bitrex qualitative test
Saccharin spray test
Quantitative fit test using PortaCount
User seal check
In BMW rules (2023 amendment, India), expired cytotoxic drugs are to be disposed by:
Autoclaving and shredding
Incineration at >1200°C
Microwave treatment
Deep burial
The maximum storage time for biomedical waste at 10°C in healthcare facilities is:
12 hours
24 hours
48 hours
72 hours
In a hospital, blood-soaked dressings are disposed in:
Red bag
Yellow bag
Blue puncture-proof container
Black bag
Mercury-containing thermometers are discarded via:
Blue puncture-proof container
Red bag
Yellow bag
Black bag
For autoclaving microbiology culture plates, the minimum recommended temperature and time is:
110°C for 30 min
121°C for 15-30 min
134°C for 3 min
140°C for 1 min
During hospital mass casualty management, START triage classifies a patient with spontaneous breathing rate of 35/min, radial pulse absent, obeys commands as:
Red (Immediate)
Yellow (Delayed)
Green (Minor)
Black (Expectant)
In hospital fire safety, the RACE acronym stands for:
Rescue, Alarm, Confine, Extinguish/Evacuate
Run, Alert, Call, Evacuate
Remove, Activate, Control, Exit
Rescue, Assist, Contain, Evacuate
The most critical first action in hospital chemical spill management is:
Evacuate and isolate area
Neutralize spill
Call housekeeping
Document incident
In a hospital's flood preparedness plan, the priority utility to secure first is:
Elevators
Oxygen supply
Medical records
Canteen
The safest location for storing hazardous chemicals in hospitals is:
Above waist height
Below waist height with secure containment
In any ventilated space
In cold rooms only
WHO recommends surgical hand scrub duration of:
20 seconds
1 minute
2-5 minutes
10 minutes
In patient bathroom cleaning, the correct sodium hypochlorite concentration for disinfection is:
0.05%
0.1%
0.5%
1%
For hospital linen used in isolation wards, the preferred decontamination before laundering is:
Boiling water immersion
1% hypochlorite soak for 30 min
UV cabinet exposure
Steam pressing
Which is the most sensitive indicator of cleanliness in hospital surfaces?
Visual inspection
ATP bioluminescence assay
Aerobic colony count
Swab culture
In patient toilets, how frequently should cleaning occur in high-volume hospital OPDs?
Every 8 hours
Every 4 hours
Every 2 hours
After each use
In hospital kitchens, the minimum cooking temperature for poultry to ensure safety is:
60°C
70°C
75°C
80°C
Which is the most common pathogen linked to hospital kitchen outbreaks?
Salmonella typhi
E. coli O157:H7
Norovirus
Listeria monocytogenes
Hospital kitchen dishwashers should operate at minimum rinse temperature of:
50°C
65°C
75°C
82°C
In kitchen waste segregation, leftover cooked food should be disposed in:
Yellow bag
Black bag
Green bin
Blue bin
For preventing Listeria in hospital kitchens, refrigerator temperature should be maintained at:
≤0°C
≤4°C
≤8°C
≤10°C
For critical surgical instruments, the gold standard sterilization method in CSSD is:
Dry heat at 160°C for 2 hours
Steam autoclaving at 134°C for 3-5 min
Ethylene oxide gas for 12 hours
Plasma sterilization
Ethylene oxide sterilization is preferred for:
Linen
Heat-sensitive endoscopes
Stainless steel instruments
Glass syringes
In CSSD, which indicator confirms sterilization efficacy biologically?
Bowie-Dick test
Autoclave printout
Spore strip test
Chemical indicator tape
Hospital laundry handling infectious linen must use water at:
40°C
60°C
80°C
100°C
In hospital waste transport, the maximum time gap between internal collection and final disposal should be:
4 hours
8 hours
12 hours
24 hours
