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Question Bank

Question for KPSC Junior Lab Assistant - Quiz / Questions / MCQ in English

Last Update on : October 10, 2026

Duration: 90 · Questions: 100 · Max Marks: 100

View Kerala PSC Junior Lab Assistant 2026 Exam Page

To boost your performance in KPSC Junior Lab Assistant 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 KPSC Junior Lab Assistant exams.

Latest KPSC Junior Lab Assistant Exam Question (Objective Questions), MCQ in English

Subjects : Lab Assistant, Physics, Chemistry, Botany, Zoology

Question Bank KPSC Junior Lab Assistant Exam - English

Lab Assistant

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 :
The scientist who discovered the cell is –
  1. A.Robert Hooke
  2. B.Robert Cook
  3. C.Robert James
  4. D.Robert Cook
Q 30 :
The smallest functional and structural unit of the body is -
  1. A.tissue
  2. B.muscles
  3. C.bones
  4. D.cell
Q 31 :
The power planet of the cell is called -
  1. A.nucleus
  2. B.nucleus
  3. C.mitochondria
  4. D.lysosome
Q 32 :
The study of cells is called -
  1. A.Anatomy
  2. B.Cytology
  3. C.Histology
  4. D.Physiology
Q 33 :
Lysosome is called -
  1. A.Power planet of the cell
  2. B.unit of cell
  3. C.suicide bag
  4. D.protein unit
Q 34 :
The largest organelle of the cell is -
  1. A.nucleus
  2. B.center
  3. C.mitochondria
  4. D.lysosome
Q 35 :
The organ of the cell that produces proteins is.
  1. A.lysosome
  2. B.ribosome
  3. C.mitochondria
  4. D.nucleus
Q 36 :
The study of tissues is called.
  1. A.Cytology
  2. B.Histology
  3. C.Myology
  4. D.Cardiology
Q 37 :
The engine of the cell is called
  1. A.Ribosome
  2. B.lysosome
  3. C.mitochondria
  4. D.Golgibody
Q 38 :
How many types of epithelial tissue are there?
  1. A.one
  2. B.two
  3. C.four
  4. D.three
Q 39 :
Which of the following cells produce elastic and collagen fibers?
  1. A.Adipocyte
  2. B.Fibroblast
  3. C.Mast Cell
  4. D.All
Q 40 :
Tissue present in urinary bladder
  1. A.Cuboid epithelium
  2. B.Transitional epithelium
  3. C.Columnar epithelium
  4. D.All
Q 41 :
The actions of cardiac muscle are
  1. A.optional
  2. B.involuntary
  3. C.both voluntary and involuntary
  4. D.ano one
Q 42 :
Transformation of one cell into another cell is called -
  1. A.Atropy
  2. B.Hypertropy
  3. C.Metaplasia
  4. D.Hyperplasia
Q 43 :
The interval of cell division is called
  1. A.Metaphase
  2. B.Prophase
  3. C.Interphase
  4. D.Anaphase
Q 44 :
Who gets the credit for the discovery of blood group?
  1. A.Karl Land Steiner
  2. B.Leeuwenhoek
  3. C.George Thomas
  4. D.none
Q 45 :
Blood bank of human body is called
  1. A.lever
  2. B.heart
  3. C.spleen
  4. D.kidney
Q 46 :
The volume of blood in the human body is -
  1. A.5-6 liters
  2. B.6-7 liters
  3. C.7-9 liters
  4. D.4-6 liters
Q 47 :
The life cycle of RBC is
  1. A.90 days
  2. B.150 days
  3. C.80 days
  4. D.120 days
Q 48 :
What causes red color of blood?
  1. A.hemoglobin
  2. B.hemoglobin
  3. C.hemoglobin
  4. D.hemoglobin
Q 49 :
Blood is a type of tissue
  1. A.Epithelium
  2. B.Connective
  3. C.Nervous
  4. D.Muscular
Q 50 :
Vitamin K is helpful in which of the following
  1. A.In making blood clot
  2. B.to thin the blood
  3. C.To facilitate blood flow
  4. D.all

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