Diploma in OTTM license examination model question

DIPLOMA IN OTTM – 50 MCQs

Anatomy & Physiology

1. The largest organ in the human body is:
   A) Liver
   B) Skin
   C) Brain
   D) Lungs

2. The functional unit of the kidney is:
   A) Nephron
   B) Alveolus
   C) Glomerulus
   D) Bowman’s capsule

3. Which artery supplies the heart muscle?
   A) Pulmonary artery
   B) Coronary artery
   C) Carotid artery
   D) Subclavian artery

4. The normal range of adult respiratory rate is:
   A) 8–10/min
   B) 12–20/min
   C) 22–28/min
   D) 30–40/min

5. Which cranial nerve controls the diaphragm?
   A) Vagus nerve
   B) Phrenic nerve
   C) Hypoglossal nerve
   D) Trigeminal nerve

6. The total number of bones in adult human body is:
   A) 204
   B) 206
   C) 208
   D) 210

7. The largest gland in the human body is:
   A) Pancreas
   B) Liver
   C) Thyroid
   D) Adrenal

8. Gas exchange occurs in:
   A) Trachea
   B) Bronchi
   C) Alveoli
   D) Pleura

9. The hormone insulin is secreted by:
   A) Adrenal cortex
   B) Pancreas (Islets of Langerhans)
   C) Pituitary
   D) Thyroid

10. Which part of the brain controls balance and coordination?
    A) Cerebrum
    B) Cerebellum
    C) Medulla
    D) Pons

---

Microbiology & Infection Control

11. Autoclaving is done at:
    A) 100°C for 15 min
    B) 121°C for 15 min at 15 psi
    C) 134°C for 5 min at 30 psi
    D) 160°C for 1 hour

12. Bacteria are best stained by:
    A) Gram stain
    B) Ziehl-Neelsen stain
    C) Wright’s stain
    D) Leishman stain

13. The causative organism of gas gangrene is:
    A) Staphylococcus aureus
    B) Clostridium perfringens
    C) Streptococcus pyogenes
    D) Pseudomonas aeruginosa

14. The universal precaution includes all EXCEPT:
    A) Wearing gloves
    B) Recapping needles
    C) Mask use
    D) Handwashing

15. The most effective disinfectant for HIV virus is:
    A) Phenol
    B) Alcohol
    C) Sodium hypochlorite
    D) Lysol

16. The ideal temperature for storing blood is:
    A) 0°C
    B) 1–6°C
    C) 10°C
    D) Room temperature

17. Asepsis means:
    A) Presence of microorganisms
    B) Absence of pathogenic microorganisms
    C) Infection
    D) Sterility failure

18. The process of killing all microorganisms including spores is:
    A) Disinfection
    B) Sterilization
    C) Pasteurization
    D) Antisepsis

19. Which of the following is a spore-forming bacteria?
    A) E. coli
    B) Clostridium
    C) Klebsiella
    D) Neisseria

20. The standard concentration of formalin used for fumigation is:
    A) 20%
    B) 30%
    C) 40%
    D) 10%

---

OT Techniques & Sterilization

21. The sterile area in OT includes:
    A) Scrub area
    B) Operation table
    C) Corridor
    D) Changing room

22. Ethylene oxide sterilization is used for:
    A) Linen
    B) Rubber and plastic items
    C) Glassware
    D) Instruments

23. Instruments are arranged on:
    A) Mayo table
    B) Instrument trolley
    C) Both A and B
    D) Floor table

24. The position used for perineal surgeries is:
    A) Supine
    B) Lithotomy
    C) Trendelenburg
    D) Prone

25. The function of suction machine in OT is:
    A) To provide oxygen
    B) To remove blood and secretions
    C) To monitor BP
    D) To sterilize instruments

26. The blue zone in OT indicates:
    A) Clean area
    B) Sterile zone
    C) Dirty area
    D) Store

27. Drapes used in surgery should be:
    A) Waterproof
    B) Cotton
    C) Plastic
    D) Wool

28. The ideal air pressure in OT is:
    A) Positive pressure
    B) Negative pressure
    C) Neutral
    D) Variable

29. The most important step before scrubbing is:
    A) Wearing gown
    B) Wearing mask and cap
    C) Touching sterile field
    D) None

30. Scrubbing time for hands is:
    A) 30 seconds
    B) 1 minute
    C) 3–5 minutes
    D) 10 minutes

---

Anaesthesia & Surgery Basics

31. Local anesthesia acts by:
    A) Blocking motor nerves
    B) Blocking sensory nerves
    C) Depressing CNS
    D) Inducing sleep

32. Spinal anesthesia is given at the level of:
    A) L1–L2
    B) L3–L4
    C) T10–T11
    D) L5–S1

33. The color of oxygen cylinder is:
    A) Black with white shoulder
    B) Blue
    C) Black with green shoulder
    D) Green

34. The anesthetic agent causing malignant hyperthermia is:
    A) Halothane
    B) Ether
    C) Succinylcholine
    D) Nitrous oxide

35. The antidote for morphine overdose is:
    A) Naloxone
    B) Atropine
    C) Neostigmine
    D) Diazepam

36. The commonest complication of spinal anesthesia is:
    A) Vomiting
    B) Headache
    C) Fever
    D) Infection

37. Pulse oximeter measures:
    A) Blood pressure
    B) Heart rate
    C) Oxygen saturation
    D) CO₂ level

38. The color code for nitrous oxide cylinder is:
    A) Black with white shoulder
    B) Blue
    C) White
    D) Green

39. Minimum alveolar concentration (MAC) is related to:
    A) Potency of inhaled anesthetic
    B) Toxicity
    C) Cost
    D) Blood solubility

40. The safest muscle relaxant in renal failure is:
    A) Vecuronium
    B) Pancuronium
    C) Atracurium
    D) Rocuronium

---

Surgical Instruments & Procedures

41. Mosquito forceps are used for:
    A) Holding skin
    B) Clamping small blood vessels
    C) Cutting sutures
    D) Grasping tissue

42. The instrument used to hold bowel is:
    A) Allis forceps
    B) Babcock forceps
    C) Kocher forceps
    D) Artery forceps

43. The suture material absorbed by the body is:
    A) Silk
    B) Catgut
    C) Nylon
    D) Prolene

44. The size of needle used for IM injection in adult is:
    A) 18G
    B) 20G
    C) 21G
    D) 23G

45. The normal adult blood volume is approximately:
    A) 2 L
    B) 3 L
    C) 5 L
    D) 7 L

46. The instrument used to retract abdominal wall is:
    A) Langenbeck retractor
    B) Balfour retractor
    C) Doyen retractor
    D) Volkmann retractor

47. “Swab count” is done to prevent:
    A) Hypotension
    B) Retained foreign body
    C) Hypoxia
    D) Bleeding

48. Surgical asepsis is maintained by:
    A) Sterile gloves
    B) Clean apron
    C) Hand wash only
    D) Changing shoes

49. The first step in wound management is:
    A) Suturing
    B) Cleaning and debridement
    C) Dressing
    D) Bandaging

50. Postoperative infection usually occurs within:
    A) 6 hours
    B) 24 hours
    C) 48–72 hours
    D) 1 week

---

ANSWER KEY (1–50)

1–B
2–A
3–B
4–B
5–B
6–B
7–B
8–C
9–B
10–B
11–B
12–A
13–B
14–B
15–C
16–B
17–B
18–B
19–B
20–C
21–B
22–B
23–C
24–B
25–B
26–B
27–A
28–A
29–B
30–C
31–B
32–B
33–A
34–C
35–A
36–B
37–C
38–B
39–A
40–C
41–B
42–B
43–B
44–C
45–C
46–B
47–B
48–A
49–B
50–C