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Question for OPSC Medical Officer - Quiz / Questions / MCQ in English

Last Update on : October 11, 2026

Duration: 180 Β· Questions: 200 Β· Max Marks: 200

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To boost your performance in OPSC Medical Officer 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 OPSC Medical Officer exams.

Latest OPSC Medical Officer Exam Question (Objective Questions), MCQ in English

Subjects : Anatomy, Physiology, Biochemistry, Pharmacology, Pathology, Microbiology, F.M.T., Community Medicine, Skin & VD, Radio Diagnosis, Dental, Medicine, Paediatrics, Surgery, Orthopaedics, ENT, Ophthalmology, O&G, Anaesthesiology, Psychiatry

Question Bank OPSC Medical Officer Exam - English

Anatomy

Q 1 :
Diaphragm is supplied by -
  1. A.Phrenic nerve
  2. B.C2, C3, C4 Roots
  3. C.Thoracodorsal nerve
  4. D.Long thoracic nerve
Q 2 :
Which of the following is a traction epiphysis ?
  1. A.Distal Radius
  2. B.Mastoid process
  3. C.Tibial Condyles
  4. D.Coracoid Process
Q 3 :
Respiratory bronchioles are formed from -
  1. A.Principal bronchus
  2. B.Terminal bronchioles
  3. C.Tertiary Bronchus
  4. D.Lobar bronchioles
Q 4 :
Which of the following structures is related to the esophagus 22.5cm from the incisor teeth ?
  1. A.Arch of aorta
  2. B.Right principal broncus
  3. C.Thoracic Duct
  4. D.Azygous Vein
Q 5 :
Which of the following are cusps of the aortic valves ?
  1. A.Left, right and Anterior
  2. B.Anterior, Right and Posterior
  3. C.Posterior , Left and Right
  4. D.Anterior , Posterior and Left

Physiology

Q 6 :
True about function of secretin 
  1. A.Antagonizes the action of CCK
  2. B.Stimulates gastrin secretion
  3. C.Delay gastric emptying
  4. D.All of the above
Q 7 :
Nissl's granules are found in which part of nerve cell-
  1. A.Axon hillock
  2. B.Axons
  3. C.Node of Ranvier
  4. D.Body
Q 8 :
Action potential in cardiac muscles is due to which ions -
  1. A.K+
  2. B.Na+
  3. C.Ca+2
  4. D.Cl-
Q 9 :
Thick Ascending Limb of loop of Henele has which channels -
  1. A.Na + Cl - contransporter
  2. B.Na + -2Cl - - K + cotransporter
  3. C.ENaC channel
  4. D.Na + - aminoacidcotransporter
Q 10 :
True about arginine vasopression -
  1. A.Major action on kidney is through V 1 recepter
  2. B.Causes vasoconstriction
  3. C.Causes release of v WF
  4. D.Causes vasodilation

Biochemistry

Q 11 :
Which of the following is a macromolecule composed of amino acids ?
  1. A.Nucleic acid
  2. B.Lipid
  3. C.Carbohydrate
  4. D.Protein
Q 12 :
Ò€‹Which of the following is the primary energy currency of the cell ?
  1. A.ATP
  2. B.DNA
  3. C.RNA
  4. D.Glucose
Q 13 :
Enzymes are examples of which type of biomolecule ?
  1. A.Carbohydrates
  2. B.Nucleic acids
  3. C.Proteins
  4. D.Lipids
Q 14 :
What is the main function of DNA in cells ?
  1. A.Energy storage
  2. B.Enzyme synthesis
  3. C.Genetic information storage
  4. D.Cellular respiration
Q 15 :
Which of the following is an example of a monosaccharide ?
  1. A.Glucose
  2. B.Sucrose
  3. C.Lactose
  4. D.Maltose
Q 16 :
Which organelle is responsible for protein synthesis ?
  1. A.Mitochondrion
  2. B.Nucleus
  3. C.Golgi apparatus
  4. D.Endoplasmic reticulum
Q 17 :
Which molecule carries the genetic information from the nucleus to the ribosomes for protein synthesis ?
  1. A.mRNA
  2. B.tRNA
  3. C.rRNA
  4. D.DNA
Q 18 :
Which of the following is not a function of the liver ?
  1. A.Detoxification
  2. B.Carbohydrate digestion
  3. C.Protein synthesis
  4. D.Bile production
Q 19 :
Hemoglobin is an example of which type of protein ?
  1. A.Enzyme
  2. B.Structural protein
  3. C.Antibody
  4. D.Transport protein
Q 20 :
Which vitamin is synthesized in the skin when exposed to sunlight ?
  1. A.Vitamin A
  2. B.Vitamin C
  3. C.Vitamin D
  4. D.Vitamin E

Pharmacology

Q 21 :
What term describes the study of how drugs affect the body and how the body affects drugs ?
  1. A.Pathology
  2. B.Physiology
  3. C.Pharmacology
  4. D.Histology
Q 22 :
Which phase of drug development involves testing a new drug on healthy volunteers to determine its safety and dosage range ?
  1. A.Phase I
  2. B.Phase II
  3. C.Phase III
  4. D.Phase IV
Q 23 :
Which route of drug administration provides the fastest onset of action ?
  1. A.Oral
  2. B.Intravenous
  3. C.Subcutaneous
  4. D.Topical
Q 24 :
When the combined effect of two drugs is greater than the sum of their individual effects, the interaction is called?
  1. A.Synergism
  2. B.Antagonism
  3. C.Additive action
  4. D.Indifference
Q 25 :
Which organ is primarily responsible for drug metabolism ?
  1. A.Kidneys
  2. B.Liver
  3. C.Heart
  4. D.Lungs

Pathology

Q 26 :
Which of the following is the basic structural and functional unit of all living organisms?
  1. A.Tissue
  2. B.Organ
  3. C.Cell
  4. D.Organ system
Q 27 :
The plasma membrane of a cell is primarily composed of:
  1. A.Proteins and carbohydrates
  2. B.Phospholipids and proteins
  3. C.Nucleic acids and lipids
  4. D.Carbohydrates and lipids
Q 28 :
Which cellular organelle is responsible for generating most of the cell's ATP (adenosine triphosphate)?
  1. A.Endoplasmic reticulum
  2. B.Golgi apparatus
  3. C.Mitochondria
  4. D.Lysosomes
Q 29 :
Protein synthesis primarily occurs in which cellular organelle?
  1. A.Golgi apparatus
  2. B.Ribosomes
  3. C.Lysosomes
  4. D.Peroxisomes
Q 30 :
The genetic material of a eukaryotic cell is primarily located in the:
  1. A.Cytoplasm
  2. B.Nucleus
  3. C.Mitochondria
  4. D.Endoplasmic reticulum
Q 31 :
Which of the following is NOT a primary type of tissue in the human body?
  1. A.Epithelial tissue
  2. B.Connective tissue
  3. C.Muscle tissue
  4. D.Osseous tissue (This is a type of connective tissue)
Q 32 :
Epithelial tissues are characterized by:
  1. A.Abundant extracellular matrix
  2. B.Closely packed cells with little intercellular substance
  3. C.Extensive vascularization
  4. D.Contractile properties
Q 33 :
Which type of epithelial tissue is specialized for secretion and is found in glands?
  1. A.Squamous epithelium
  2. B.Cuboidal epithelium
  3. C.Columnar epithelium
  4. D.Glandular epithelium
Q 34 :
Stratified squamous epithelium is primarily found in areas subject to:
  1. A.Absorption
  2. B.Secretion
  3. C.Abrasion
  4. D.Filtration
Q 35 :
Ciliated pseudostratified columnar epithelium is characteristic of the:
  1. A.Lining of the stomach
  2. B.Lining of the urinary bladder
  3. C.Lining of the trachea
  4. D.Lining of blood vessels

Microbiology

Q 36 :
What is the complete elimination or destruction of all forms of microbial life, including spores, called?
  1. A.Disinfection
  2. B.Antisepsis
  3. C.Sterilization
  4. D.Sanitization
Q 37 :
Which of the following sterilization methods uses moist heat under pressure?
  1. A.Dry heat sterilization
  2. B.Filtration
  3. C.Autoclaving
  4. D.Radiation
Q 38 :
What is the standard temperature and pressure used in an autoclave for sterilization?
  1. A.100Β°C at 10 psi for 15 minutes
  2. B.121Β°C at 15 psi for 15-20 minutes
  3. C.134Β°C at 20 psi for 5-10 minutes
  4. D.160Β°C for 2 hours
Q 39 :
Which sterilization method is suitable for heat-labile materials like some plastics and pharmaceuticals?
  1. A.Autoclaving
  2. B.Dry heat sterilization
  3. C.Filtration
  4. D.Incineration
Q 40 :
Which type of radiation is commonly used for sterilizing medical devices and pharmaceuticals?
  1. A.Ultraviolet (UV) radiation
  2. B.Infrared (IR) radiation
  3. C.Gamma radiation
  4. D.Microwave radiation
Q 41 :
What is the primary mechanism of action of dry heat sterilization?
  1. A.Coagulation of proteins
  2. B.Oxidation
  3. C.Disruption of cell membranes
  4. D.Damage to nucleic acids
Q 42 :
What is the term for the reduction or elimination of pathogenic microorganisms to a level where they are no longer hazardous?
  1. A.Sterilization
  2. B.Disinfection
  3. C.Antisepsis
  4. D.Sanitization
Q 43 :
Which of the following is a high-level disinfectant that can achieve sterilization with prolonged exposure?
  1. A.Ethanol (70%)
  2. B.Hydrogen peroxide (3%)
  3. C.Glutaraldehyde (2%)
  4. D.Quaternary ammonium compounds
Q 44 :
Which of the following is an example of a halogen used as a disinfectant?
  1. A.Formaldehyde
  2. B.Phenol
  3. C.Iodine
  4. D.Chlorhexidine
Q 45 :
What is the mechanism of action of alcohol-based disinfectants?
  1. A.Oxidation
  2. B.Alkylation
  3. C.Protein denaturation and lipid dissolution
  4. D.Intercalation into DNA

F.M.T.

Q 46 :
What does FMT stand for ?
  1. A.Fecal Microbial Therapy
  2. B.Fecal Microbiota Transplantation
  3. C.Fecal Microbiome Treatment
  4. D.Fecal Medical Transplant
Q 47 :
FMT is primarily used to treat which of the following conditions ?
  1. A.Diabetes
  2. B.Hypertension
  3. C.Irritable Bowel Syndrome
  4. D.Migraine
Q 48 :
In FMT, where is the donated fecal material typically sourced from ?
  1. A.Animals
  2. B.Synthetic sources
  3. C.The patient's own stool
  4. D.Healthy donors
Q 49 :
What is the main purpose of FMT ?
  1. A.Treating bacterial infections
  2. B.Restoring gut microbial balance
  3. C.Boosting the immune system
  4. D.Replenishing blood cells
Q 50 :
FMT has shown promise in treating which of the following infections ?
  1. A.Influenza
  2. B.Tuberculosis
  3. C.Clostridium difficile infection
  4. D.HIV

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