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Question Bank

Question for Lab Technician - Quiz / Questions / MCQ in English

Last Update on : October 10, 2026

Duration: 60 · Questions: 50 · Max Marks: 50

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To boost your performance in Lab Technician exam, practice each question regularly and with focus. Every question tests your subject understanding, so solve them one at a time. Taking a quiz improves your speed and accuracy. Practicing topic-wise MCQs. Students benefit greatly from reviewing questions with answer keys, which help clarify concepts and strengthen Questions knowledge for success in Lab Technician exams.

Latest Lab Technician Exam Question (Objective Questions), MCQ in English

Subjects : Lab Technician

Question Bank Lab Technician - English

Lab Technician

Q 1 :
Which scientist identified *Mycobacterium tuberculosis* as the causative agent of tuberculosis? 
  1. A.Louis Pasteur
  2. B.Robert Koch
  3. C.Joseph Lister
  4. D.Edward Jenner
Q 2 :
Father of antiseptic surgery is
  1. A.
    Louis Pasteur
  2. B.Robert Koch
  3. C.Antonie Van Leeuwenhoek
  4. D.Lister ​
Q 3 :
Which process developed by Louis Pasteur uses controlled heating to reduce harmful microorganisms in beverages?
  1. A.Autoclaving
  2. B.Pasteurization
  3. C.Tyndallization
  4. D.Incineration
Q 4 :
Mycobacterium leprae is also known as .............
  1. A.Golden bacilli
  2. B.Koch's bacillus
  3. C.Magical bacilli
  4. D.Hansen's bacilli
Q 5 :
Which combination represents the WHO-recommended multidrug therapy for leprosy?
  1. A.Rifampicin, dapsone and clofazimine
  2. B.Rifampicin, isoniazid and ethambutol
  3. C.Dapsone, acyclovir and rifampicin
  4. D.Clofazimine, zidovudine and isoniazid
Q 6 :
Mycobacterium tuberculosis is also known as
  1. A.Golden bacilli
  2. B.Koch's bacillus
  3. C.Magical bacilli
  4. D.Hansen's bacilli
Q 7 :
Who developed the first practical electron microscope?
  1. A.Robert Koch and Louis Pasteur
  2. B.Ernst Ruska and Max Knoll
  3. C.Edward Jenner and Joseph Lister
  4. D.Watson and Crick
Q 8 :
Which of the following organisms is NOT acid-fast?
  1. A.Mycobacterium tuberculosis
  2. B.Nocardia species
  3. C.Cystoisospora belli oocysts
  4. D.Staphylococcus aureus
Q 9 :
In bacteria, the electron transport chain responsible for aerobic respiration is primarily located in which structure?
  1. A.Cytoplasmic membrane
  2. B.Ribosome
  3. C.Capsule
  4. D.Nucleoid
Q 10 :
Which bacterial structure can help prevent phagocytosis by host immune cells?
  1. A.Capsule
  2. B.Ribosome
  3. C.Nucleoid
  4. D.Endospore
Q 11 :
What term describes spherical bacteria arranged in chains?
  1. A.Staphylococci
  2. B.Streptococci
  3. C.Diplobacilli
  4. D.Vibrios
Q 12 :
Coma shaped bacteria are known as
  1. A.Staphylococci
  2. B.Streptococci
  3. C.Vibrio
  4. D.Bacillus
Q 13 :
Which of the following is most resistant to sterilization ?
  1. A.Tubercle bacilli
  2. B.Viruses
  3. C.Spores
  4. D.Prions
Q 14 :
Which method is commonly used for high-level disinfection of heat-sensitive flexible endoscopes?
  1. A.Glutaraldehyde-based high-level disinfection
  2. B.Dry heat at 160°C
  3. C.Flaming
  4. D.Routine steam autoclaving
Q 15 :
Which of the following is a classical transport medium used for stool specimens suspected of containing *Vibrio cholerae*?
  1. A.Venkatraman-Ramakrishnan medium
  2. B.Blood agar
  3. C.Nutrient agar
  4. D.Selenite F broth
Q 16 :
Which of the following is an enriched culture medium?
  1. A.Peptone water
  2. B.Selenite F broth
  3. C.Chocolate agar
  4. D.MacConkey agar
Q 17 :
Which of the following factor does not affect microbial growth ?
  1. A.Moisture
  2. B.Disinfection
  3. C.Darkness
  4. D.Temperature
Q 18 :
Agar concentration required to prepare nutrient agar is :
  1. A.1 - 2%
  2. B.4 - 6%
  3. C.0.25 - 0.5%
  4. D.0.5 - 1%
Q 19 :
HIV is a
  1. A.Retro virus
  2. B.DNA virus
  3. C.Fungus
  4. D.Bacteria
Q 20 :
MRSA is mediated due to
  1. A.Plasmid
  2. B.Chromosome
  3. C.Transposons
  4. D.None of these
Q 21 :
All of the following are vector bone diseases except
  1. A.Malaria
  2. B.Filariasis
  3. C.Rubella
  4. D.Chagas disease
Q 22 :
Primary immune response the correct statement is :
  1. A.Involves IgG
  2. B.Antibody producing cells . Memory B cell
  3. C.No lag period
  4. D.Slow and sluggish
Q 23 :
Which transfusion-transmissible infection is routinely screened for in donated blood?
  1. A.HIV infection
  2. B.Common cold
  3. C.Tetanus
  4. D.Diphtheria
Q 24 :
Which one of the following is post streptococcal sequelae :
  1. A.Acute rheumatic fever
  2. B.Cellulitis
  3. C.Pharyngitis
  4. D.Impetigo
Q 25 :
In a person with no known TB risk factors, what tuberculin skin test induration is considered positive according to CDC interpretation?
  1. A.≥2 mm
  2. B.≥5 mm
  3. C.≥10 mm
  4. D.≥15 mm
Q 26 :
Which laboratory method provides definitive confirmation of typhoid fever when *Salmonella Typhi* is isolated from blood?
  1. A.Blood culture
  2. B.Schick test
  3. C.Dick test
  4. D.Mantoux test
Q 27 :
Which test was historically used to determine susceptibility to diphtheria toxin?
  1. A.Mantoux test
  2. B.Schick test
  3. C.Dick test
  4. D.Weil-Felix test
Q 28 :
Diagnostic test used for TB is .
  1. A.Mantoux Test
  2. B.Dick Test
  3. C.Hick Test
  4. D.Widal Test
Q 29 :
Diagnostic test used for scarlet fever is .
  1. A.Mantoux Test
  2. B.Dick Test
  3. C.Shick Test
  4. D.Widal Test
Q 30 :
Diagnostic test used for typhus fever is .
  1. A.Mantoux Test
  2. B.Dick Test
  3. C.Shick Test
  4. D.Weil Felix
Q 31 :
Route of injecting shick test toxin / purified protein derivative (mauntox test) is .....
  1. A.Intra vascular
  2. B.Intra dermal
  3. C.Intra muscular
  4. D.Subcutaneous
Q 32 :
At which site is purified protein derivative typically administered for a Mantoux tuberculin skin test?
  1. A.Volar surface of the forearm
  2. B.Gluteal region
  3. C.Deltoid muscle
  4. D.Anterior thigh muscle
Q 33 :
Most accurate method of diagnosis of Helicobacter pylori is :
  1. A.Culture
  2. B.Biopsy urease test
  3. C.Histopathology
  4. D.Urea breath test
Q 34 :
All of the following viruses are transmitted by respiratory route except :
  1. A.Influenza virus
  2. B.Rota virus
  3. C.Respiratory syncytial virus
  4. D.Rhino virus
Q 35 :
Acid fast staining is used to detect
  1. A.Mycobacterium TB
  2. B.Ctetani
  3. C.HIV / AIDS
  4. D.Meningococci
Q 36 :
During the window period of patient with AIDS, best diagnostic test is :
  1. A.ELISA
  2. B.Western Blot
  3. C.Rapid Test
  4. D.RT - PCR
Q 37 :
Which laboratory measurement directly quantifies the amount of HIV circulating in the blood?
  1. A.CD4 cell count
  2. B.HIV RNA viral load
  3. C.CD8 cell count
  4. D.HIV antibody titre
Q 38 :
Which route carries a particularly high risk of HIV transmission when infected blood is directly transfused to a recipient?
  1. A.Blood transfusion
  2. B.Casual skin contact
  3. C.Sharing food
  4. D.Mosquito bite
Q 39 :
Most common malignancy in AIDS is :
  1. A.Kaposi sarcoma
  2. B.Cell lymphoma
  3. C.Leukemia
  4. D.Burkitt's lymphoma
Q 40 :
Which organism is classically associated with food poisoning following ingestion of food containing large numbers of vegetative cells that subsequently produce enterotoxin?
  1. A.Clostridium perfringens
  2. B.Corynebacterium diphtheriae
  3. C.Clostridium tetani
  4. D.Mycobacterium tuberculosis
Q 41 :
Which chemical has traditionally been used for high-level disinfection of heat-sensitive endoscopes and bronchoscopes?
  1. A.Glutaraldehyde
  2. B.Methanol
  3. C.Sodium chloride
  4. D.Distilled water
Q 42 :
Method of sterilization used for culture media is .
  1. A.Autoclave
  2. B.Hot air oven
  3. C.Pasteurization
  4. D.None of the above
Q 43 :
Which of the following is “LIVE ATTENUATED VACCINE” ?
  1. A.BCG vaccine
  2. B.Rabies vaccine
  3. C.Diphtheria toxoid
  4. D.Tetanus toxoid
Q 44 :
Which type of vaccine contains a weakened form of a living microorganism capable of limited replication in the recipient?
  1. A.Live attenuated vaccine
  2. B.Inactivated vaccine
  3. C.Toxoid vaccine
  4. D.Subunit vaccine
Q 45 :
The method of killing of all microorganisms including their spores is known as ....
  1. A.Sterilization
  2. B.Disinfection
  3. C.Incineration
  4. D.Lysis
Q 46 :
The method of reducing the number of pathogens from anyarticle, surface or medium is called as ....
  1. A.Sterilization
  2. B.Disinfection
  3. C.Incineration
  4. D.Lysis
Q 47 :
The causative agent of Tuberculosis (T.B.) is
  1. A.Mycobacterium tuberculosis
  2. B.Mycobacterium leprae
  3. C.Treponema pallidum
  4. D.Borrelia species
Q 48 :
The causative agent of Syphilis is
  1. A.Mycobacterium tuberculosis
  2. B.Mycobacterium leprae
  3. C.Treponema pallidum
  4. D.Borrelia species
Q 49 :
VDRL test is used for the diagnosis of
  1. A.Syphilis
  2. B.Tuberculosis
  3. C.Hot air oven
  4. D.Both (a) & (b)
Q 50 :
Which of the following is a standard method of sterilization using moist heat under pressure?
  1. A.Autoclaving
  2. B.Hot-air oven
  3. C.Incineration
  4. D.Filtration

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