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Set 3 MCQs - Applied Community Medicine

Total questions: 30

Worksheet time: 30mins

Name
Class
Date
1.

In an outbreak investigation of Candida auris in ICU, which environmental decontamination agent has the highest proven efficacy?

a)

Sodium hypochlorite 0.5%

b)

Quaternary ammonium compounds

c)

Hydrogen peroxide vapor

d)

Phenolic compounds

2.

Which is the strongest predictor of catheter-associated urinary tract infection (CAUTI) incidence in ICU?

a)

Duration of catheterization

b)

Catheter material type

c)

Frequency of urine sampling

d)

Nurse-to-patient ratio

3.

In a negative pressure airborne infection isolation room, the recommended air changes per hour (ACH) is:

a)

6

b)

8

c)

12

d)

20

4.

Which WHO '5 Moments for Hand Hygiene' step is most commonly missed by healthcare workers in ICUs globally?

a)

Before touching a patient

b)

Before aseptic procedure

c)

After body fluid exposure risk

d)

After touching patient surroundings

5.

For N95 respirator fit testing, the gold standard method is:

a)

Bitrex qualitative test

b)

Saccharin spray test

c)

Quantitative fit test using PortaCount

d)

User seal check

6.

In BMW rules (2023 amendment, India), expired cytotoxic drugs are to be disposed by:

a)

Autoclaving and shredding

b)

Incineration at >1200°C

c)

Microwave treatment

d)

Deep burial

7.

The maximum storage time for biomedical waste at 10°C in healthcare facilities is:

a)

12 hours

b)

24 hours

c)

48 hours

d)

72 hours

8.

In a hospital, blood-soaked dressings are disposed in:

a)

Red bag

b)

Yellow bag

c)

Blue puncture-proof container

d)

Black bag

9.

Mercury-containing thermometers are discarded via:

a)

Blue puncture-proof container

b)

Red bag

c)

Yellow bag

d)

Black bag

10.

For autoclaving microbiology culture plates, the minimum recommended temperature and time is:

a)

110°C for 30 min

b)

121°C for 15-30 min

c)

134°C for 3 min

d)

140°C for 1 min

11.

During hospital mass casualty management, START triage classifies a patient with spontaneous breathing rate of 35/min, radial pulse absent, obeys commands as:

a)

Red (Immediate)

b)

Yellow (Delayed)

c)

Green (Minor)

d)

Black (Expectant)

12.

In hospital fire safety, the RACE acronym stands for:

a)

Rescue, Alarm, Confine, Extinguish/Evacuate

b)

Run, Alert, Call, Evacuate

c)

Remove, Activate, Control, Exit

d)

Rescue, Assist, Contain, Evacuate

13.

The most critical first action in hospital chemical spill management is:

a)

Evacuate and isolate area

b)

Neutralize spill

c)

Call housekeeping

d)

Document incident

14.

In a hospital's flood preparedness plan, the priority utility to secure first is:

a)

Elevators

b)

Oxygen supply

c)

Medical records

d)

Canteen

15.

The safest location for storing hazardous chemicals in hospitals is:

a)

Above waist height

b)

Below waist height with secure containment

c)

In any ventilated space

d)

In cold rooms only

16.

WHO recommends surgical hand scrub duration of:

a)

20 seconds

b)

1 minute

c)

2-5 minutes

d)

10 minutes

17.

In patient bathroom cleaning, the correct sodium hypochlorite concentration for disinfection is:

a)

0.05%

b)

0.1%

c)

0.5%

d)

1%

18.

For hospital linen used in isolation wards, the preferred decontamination before laundering is:

a)

Boiling water immersion

b)

1% hypochlorite soak for 30 min

c)

UV cabinet exposure

d)

Steam pressing

19.

Which is the most sensitive indicator of cleanliness in hospital surfaces?

a)

Visual inspection

b)

ATP bioluminescence assay

c)

Aerobic colony count

d)

Swab culture

20.

In patient toilets, how frequently should cleaning occur in high-volume hospital OPDs?

a)

Every 8 hours

b)

Every 4 hours

c)

Every 2 hours

d)

After each use

21.

In hospital kitchens, the minimum cooking temperature for poultry to ensure safety is:

a)

60°C

b)

70°C

c)

75°C

d)

80°C

22.

Which is the most common pathogen linked to hospital kitchen outbreaks?

a)

Salmonella typhi

b)

E. coli O157:H7

c)

Norovirus

d)

Listeria monocytogenes

23.

Hospital kitchen dishwashers should operate at minimum rinse temperature of:

a)

50°C

b)

65°C

c)

75°C

d)

82°C

24.

In kitchen waste segregation, leftover cooked food should be disposed in:

a)

Yellow bag

b)

Black bag

c)

Green bin

d)

Blue bin

25.

For preventing Listeria in hospital kitchens, refrigerator temperature should be maintained at:

a)

≤0°C

b)

≤4°C

c)

≤8°C

d)

≤10°C

26.

For critical surgical instruments, the gold standard sterilization method in CSSD is:

a)

Dry heat at 160°C for 2 hours

b)

Steam autoclaving at 134°C for 3-5 min

c)

Ethylene oxide gas for 12 hours

d)

Plasma sterilization

27.

Ethylene oxide sterilization is preferred for:

a)

Linen

b)

Heat-sensitive endoscopes

c)

Stainless steel instruments

d)

Glass syringes

28.

In CSSD, which indicator confirms sterilization efficacy biologically?

a)

Bowie-Dick test

b)

Autoclave printout

c)

Spore strip test

d)

Chemical indicator tape

29.

Hospital laundry handling infectious linen must use water at:

a)

40°C

b)

60°C

c)

80°C

d)

100°C

30.

In hospital waste transport, the maximum time gap between internal collection and final disposal should be:

a)

4 hours

b)

8 hours

c)

12 hours

d)

24 hours