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mcq on Infectious Diseases with Answers for Students
Which Disease can be diagnosed using the Widal test?
A) Diphtheria
B) Pneumonia
C) Typhoid
D) Influenza
Option c – Typhoid
Identify the Disease caused by a deficiency of Minerals.
A) Scurvy
B) Marasmus
C) Rickets
D) Goitre
Option d – Goitre
Which infectious Disease is the result of a bacterial infection?
A) Malaria
B) Dengue
C) Influenza
D) Cholera
Option d – Cholera
Analgesics are medications mainly used for
A) Supporting normal body functions
B) Correcting vitamin or nutrient deficiencies
C) Destroying or suppressing harmful microbes
D) Relieving pain and reducing fever
Option d – Relieving pain and reducing fever
Stunted growth with discolored hair is most likely due to
A) Lack of lipids
B) Lack of glucose
C) Vitamin A deficiency
D) Protein deficiency
Option d – Protein deficiency
Epilepsy primarily impacts which part of the human body?
A) Teeth and bones
B) Brain cells
C) Skin
D) Muscles
Option b – Brain cells
COVID-19 belongs to which category of Disease?
A) Foodborne Disease
B) Protein deficiency disorder
C) Waterborne Disease
D) Zoonotic Disease
Option d – Zoonotic Disease
Unusual or prolonged bleeding from wounds is commonly linked to a shortage of
A) Vitamin E
B) Vitamin B
C) Vitamin K
D) Vitamin A
Option c – Vitamin K
A person with a very low red blood cell count is diagnosed with
A) Scurvy
B) Anaemia
C) Jaundice
D) Goitre
Option b – Anaemia
Persistent constipation can indicate a lack of
A) Protein
B) Vitamin
C) Dietary fibre
D) Calcium
Option c – Dietary fibre
If someone tests positive for malaria after a mosquito bite, it means
A) Their diet was not balanced
B) The mosquito carried the Plasmodium parasite
C) The mosquito itself had malaria
D) They missed childhood vaccinations
Option b – The mosquito carried the Plasmodium parasite
A child who avoids milk and eats little else, losing baby teeth without replacement, should be given
A) Calcium supplements
B) Carbohydrate-rich foods
C) Vitamin B complex
D) Vitamin C
Option a – Calcium supplements
Which virus causes AIDS?
A) Influenza virus
B) Human Papilloma Virus (HPV)
C) Human Immunodeficiency Virus (HIV)
D) Herpes Simplex Virus (HSV)
Option c – Human Immunodeficiency Virus (HIV)
Severe malnutrition from inadequate Food and energy intake is called
A) Kwashiorkor
B) Wasting
C) Marasmus
D) Dementia
Option c – Marasmus
A deficiency of iodine leads to low production of which hormone?
A) Thyroid
B) Thrombopoietin
C) Adrenaline
D) Melatonin
Option a – Thyroid
Which of the following is not a type of cancer?
A) Carcinoma
B) Glaucoma
C) Lymphoma
D) Sarcoma
Option b – Glaucoma
Which of these diseases is not inherited genetically?
A) Cystic fibrosis
B) Down syndrome
C) Malaria
D) Muscular dystrophy
Option c – Malaria
In which disorder does the immune system attack the intrinsic factor or the stomach cells that produce it?
A) Wernicke–Korsakoff syndrome
B) Hepatic cirrhosis
C) Pernicious anaemia
D) Hartnup disorder
Option c – Pernicious anaemia
Severe mental and physical delay during pregnancy due to iodine and thyroid hormone deficiency is known as
A) Preeclampsia
B) Toxoplasmosis
C) Cretinism
D) Syphilis
Option c – Cretinism
Which sign is not typical of iron-deficiency anemia (IDA)?
A) Pale conjunctiva of the eyes
B) Blindness
C) Soft palate
D) General pallor
Option b – Blindness
What is the most common early symptom of infant jaundice, usually between days two and four?
A) Cracks and irritation at the mouth corners
B) Puffy or swollen ankles
C) Yellowing of the skin and the whites of the eyes
D) Gum swelling and bleeding
Option c – Yellowing of the skin and the whites of the eyes
Malabsorption leading to diarrhoea, weight loss, and malnutrition from a non-functional small intestine is called
A) Down syndrome
B) Short bowel syndrome
C) Hypoglycaemia
D) Hyperglycaemia
Option b – Short bowel syndrome
Which of the following illnesses is not spread through droplets from an infected person’s mouth or nose?
A) Pneumonia
B) COVID-19
C) HIV-AIDS
D) Tuberculosis
Option c – HIV-AIDS
Why are antibiotics ineffective against viruses while vaccines can protect?
A) Antibiotics break only RNA, whereas viruses contain DNA.
B) Antibiotics are carbohydrates, while vaccines are proteins that can kill a virus.
C) Only a vaccine destroys the genetic material of a virus.
D) Viruses lack the metabolic pathways targeted by antibiotics, but a vaccine triggers immune defense.
Option d – Viruses lack the metabolic pathways targeted by antibiotics, but a vaccine triggers immune defense.
“Sleeping sickness” is caused by
A) Leishmania
B) Trypanosoma
C) Paramecium
D) Plasmodium
Option b – Trypanosoma
A persistent infection confined to a specific region without outside sources is called
A) Pandemic
B) Endemic
C) Outbreak
D) Epidemic
Option b – Endemic
Viral mutations occur because of changes in their
A) Cell size
B) Genetic material
C) Colour
D) Shape
Option b – Genetic material
Lack of iron results in
A) Anaemia
B) Scurvy
C) Rickets
D) Cholera
Option a – Anaemia
Kwashiorkor, a malnutrition disorder, is due to deficiency of
A) Vitamins
B) Minerals
C) Fats
D) Proteins
Option d – Proteins
Regarding vaccination as a preventive measure, which statements are accurate? 1. It prevents the pathogen’s entry. 2. It stimulates antibody formation. 3. It destroys the pathogen inside the body.
A) 1 only
B) 2 only
C) 2 and 3
D) 1, 2 and 3
Option b – 2 only
Dengue fever is triggered by a mosquito-borne virus belonging to
A) Flavi-ribovirus
B) Adenovirus
C) Vaccinia virus
D) Nipah virus
Option a – Flavi-ribovirus
Which of these diseases has no Vector?
A) AIDS
B) Malaria
C) Dengue
D) Zika
Option a – AIDS
Consider these facts about probiotics: 1. They contain bacteria and yeast. 2. They are present in foods but not naturally in the gut. 3. They help digest milk sugars. Which are correct?
A) 1 only
B) 2 only
C) 1 and 3
D) 2 and 3
Option c – 1 and 3
Which statement about viruses is true?
A) They are free-Living Organisms.
B) They possess nucleic Acid and protein.
C) They synthesize their own proteins.
D) They generate their own energy.
Option b – They possess nucleic Acid and protein.
Covaxin, India’s COVID-19 vaccine, is classified as
A) Live attenuated virus vaccine
B) Inactivated whole-virus vaccine
C) Messenger RNA vaccine
D) Protein subunit vaccine
Option b – Inactivated whole-virus vaccine
Who introduced oral rehydration therapy (ORT)?
A) Anandi Joshi
B) Bidhan Chandra Roy
C) Dilip Mahalanabis
D) Siddhartha Mukherjee
Option c – Dilip Mahalanabis
“Athlete’s foot” is a skin Disease caused by a
A) Fungus
B) Virus
C) Bacterium
D) Alga
Option a – Fungus
Which Disease currently lacks an effective vaccine?
A) Typhoid
B) Chickenpox
C) Viral Hepatitis C
D) Human Papilloma Virus
Option c – Viral Hepatitis C
Which condition is specifically associated with asbestos exposure?
A) Liver fibrosis
B) Lung fibrosis
C) Mesothelioma
D) Pleural effusion
Option b – Lung fibrosis
Which genetic disorder stems from an abnormal number of sex chromosomes?
A) Down’s syndrome
B) Turner’s syndrome
C) Haemophilia
D) Alkaptonuria
Option b – Turner’s syndrome
The highly contagious disease smallpox was caused by
A) Adenovirus
B) Variola virus
C) Aichi virus
D) Coxsackie virus
Option b – Variola virus
Which disease is produced by a bacterial infection?
A) AIDS
B) Dengue fever
C) Typhoid fever
D) COVID-19
Option c – Typhoid fever
Tooth decay from Streptococcus mutans occurs because the bacteria form a slime layer from
A) Sugar
B) Alcohol
C) Saliva
D) Teichoic
Option a – Sugar
Deficiency of vitamin D in humans leads to
A) Rickets
B) Scurvy
C) Beriberi
D) Pneumonia
Option a – Rickets
Which group of illnesses represents polygenic disorders?
A) Sickle cell anaemia, Haemophilia, Hypertension
B) Hypertension, Coronary heart disease, Diabetes
C) Duchenne muscular dystrophy, Colour blindness, Diabetes
D) Achondroplasia, Cystic fibrosis, Tay-Sachs disease
Option b – Hypertension, Coronary heart disease, Diabetes
Which virus is responsible for causing COVID-19?
A) SARS-CoV-2
B) SARS-CoV-19
C) SARS-CoV-20
D) SARS-CoV-1
Option a – SARS-CoV-2
Which type of Biotechnology is utilized to create Pharmaceutical products such as insulin, vaccines, and antibiotics?
A) White Biotechnology
B) Red Biotechnology
C) Green Biotechnology
D) Blue Biotechnology
Option b – Red Biotechnology
Who is credited with the initial discovery of the antibiotic penicillin?
A) Francis Crick
B) Maurice Wilkins
C) Charles Darwin
D) Alexander Fleming
Option d – Alexander Fleming
The transmission of malaria parasites occurs through which Vector?
A) Male Anopheles mosquito
B) Male Culex mosquito
C) Female Anopheles mosquito
D) Female Culex mosquito
Option c – Female Anopheles mosquito
Identify the correctly matched pair(s): 1. Malaria : Mycobacterium 2. Tuberculosis : Plasmodium. Choose the correct option:
A) 1 only
B) 2 only
C) Neither 1 nor 2
D) Both 1 and 2
Option c – Neither 1 nor 2
Which illness is transmitted through the bite of an infected female phlebotomine sandfly, leading to irregular fever, weight loss, and an enlarged spleen and liver?
A) Visceral leishmaniasis
B) Japanese encephalitis
C) Diarrhoea
D) Anaplasmosis
Option a – Visceral leishmaniasis
Which disease is considered a prime candidate for worldwide elimination?
A) Polio
B) Tuberculosis
C) Measles
D) Malaria
Option a – Polio
Excessive cadmium accumulation in the body can lead to which disorder?
A) Minamata
B) Anaemia
C) Itai-itai
D) Alzheimer’s disease
Option c – Itai-itai
Which type of surveillance is designed to find unreported disease cases?
A) Passive surveillance
B) Overt surveillance
C) Sentinel surveillance
D) Active surveillance
Option c – Sentinel surveillance
Sleeping sickness is a Vector-borne disease caused by which organism?
A) Trypanosoma brucei
B) Balantioides coli
C) Giardia duodenalis
D) Cyclospora cayetanensis
Option a – Trypanosoma brucei
Which hereditary blood disorder affects the haemoglobin gene and leads to reduced red blood cell production?
A) Somatostatinoma
B) Thalassemia
C) Venous Thromboembolism
D) Polycythemia vera
Option b – Thalassemia
Which Vitamin D derivative is prescribed for hypoparathyroidism, persistent rickets, and familial hypophosphatemia?
A) Tacalcitol
B) Tocopherol
C) Ergocalciferol
D) Retinol
Option c – Ergocalciferol
Which statement regarding sexually transmitted infections (STIs) is correct? Statement A: STIs are spread through sexual contact from an infected person to an uninfected person. Statement B: HIV, HPV, and Hepatitis B viruses can cause STIs.
A) Both statements A and B are incorrect
B) Only statement B is correct
C) Both statements A and B are correct
D) Only statement A is correct
Option c – Both statements A and B are correct
Which statement about Kwashiorkor is true? Statement A: Kwashiorkor results from a lack of fat in the diet. Statement B: Children with Kwashiorkor may remain stunted and not grow properly.
A) Only statement B is correct
B) Both statements A and B are correct
C) Both statements A and B are incorrect
D) Only statement A is correct
Option a – Only statement B is correct
Identify the incorrectly matched pair.
A) Cushing’s syndrome – Cortisol
B) Diabetes – Insulin
C) Goitre – Thyroxine
D) Acromegaly – Adrenaline
Option d – Acromegaly – Adrenaline
Which condition is caused by excessive iron deposition in the liver, spleen, and bone marrow?
A) Paraesthesia
B) Hemosiderosis
C) Dermatitis
D) Ariboflavinosis
Option b – Hemosiderosis
A deficiency of which vitamin leads to Xerophthalmia?
A) Vitamin A
B) Vitamin K
C) Vitamin C
D) Vitamin D
Option a – Vitamin A
Which organ is mainly affected by pneumonia?
A) Kidneys
B) Urinary bladder
C) Heart
D) Lungs
Option d – Lungs
Which one of these is NOT a bacterial disease?
A) Typhoid
B) Cholera
C) Plague
D) Rabies
Option d – Rabies
Which of these is NOT a communicable disease?
A) Common cold
B) Chickenpox
C) Tuberculosis
D) Diabetes
Option d – Diabetes
The Organisms that cause disease are called
A) Toxins
B) Pathogens
C) Decomposers
D) Antibodies
Option b – Pathogens
Which disease is NOT spread by mosquito bites?
A) Dengue
B) Elephantiasis
C) Malaria
D) Hepatitis
Option d – Hepatitis
Chikungunya is transmitted by which type of mosquito?
A) Culex
B) Mansonia
C) Aedes
D) Anopheles
Option c – Aedes
Which of the following is classified as a bacterial disease?
A) Rabies
B) Leprosy
C) Malaria
D) Ebola
Option b – Leprosy
Which disease-duration pairing is correct? I. Acute – long duration II. Chronic – short duration
A) Only II
B) Neither I nor II
C) Only I
D) Both I and II
Option b – Neither I nor II
Which of these is caused by a virus?
A) Chickenpox
B) Tuberculosis
C) Whooping cough
D) Malaria
Option a – Chickenpox
In adults, which condition meaning “soft bones” can arise from vitamin D deficiency, inadequate sunlight, or certain kidney/digestive disorders?
A) Osteopenia
B) Osteomyelitis
C) Osteomalacia
D) Osteoporosis
Option c – Osteomalacia
Which disease results from a lack of iodine in the diet?
A) Anaemia
B) Malaria
C) Chicken pox
D) Goitre
Option d – Goitre
Excess cadmium buildup in the body primarily harms which organ?
A) Hands and feet
B) Eyes
C) Stomach
D) Liver and kidneys
Option d – Liver and kidneys
A deficiency of Vitamin C mainly causes which disease?
A) Pellagra
B) Atherosclerosis
C) Goitre
D) Scurvy
Option d – Scurvy
Which condition occurs when the body cannot regulate blood sugar effectively?
A) Asthma
B) Diabetes
C) Hypertension
D) Arthritis
Option b – Diabetes
Lack of Vitamin D can cause bone pain, weak bones, stunted growth, and skeletal deformities. What is this condition known as?
A) Rickets
B) Pertussis
C) Dementia
D) Polio
Option a – Rickets
Who, along with Barry Marshall, received the 2005 Nobel Prize in Physiology or Medicine for proving that bacteria cause stomach ulcers?
A) Jean Paul Vuillemin
B) Robert Koch
C) Gabriel Pouchet
D) Robin Warren
Option d – Robin Warren
Which of the following is classified as a heart-related disorder? ( mcq on Infectious Diseases with Answers )
A) Acromegaly
B) Diabetes
C) Goitre
D) Angina
Option d – Angina
Which bacterial infection most commonly targets the lungs? ( mcq on Infectious Diseases with Answers )
A) Tuberculosis
B) Meningitis
C) Herpes
D) Influenza
Option a – Tuberculosis
Which of the following is NOT caused by a genetic mutation? ( mcq on Infectious Diseases with Answers )
A) Down syndrome
B) Sickle cell anaemia
C) Malaria
D) Phenylketonuria
Option c – Malaria
Which illness is transmitted through consumption of contaminated Food or beverages? ( mcq on Infectious Diseases with Answers )
A) Tuberculosis
B) Chicken pox
C) Malaria
D) Cholera
Option d – Cholera
Which rare hereditary disorder affects the pigmentation of the skin, hair, and eyes? ( mcq on Infectious Diseases with Answers )
A) Angelman syndrome
B) Alkaptonuria
C) Alagille syndrome
D) Albinism
Option d – Albinism
Which plant is traditionally used to treat coughs and colds? ( mcq on Infectious Diseases with Answers )
A) Arjun
B) Babool
C) Jamun
D) Tulsi
Option d – Tulsi
What is the name of the electrolyte imbalance caused by abnormally low sodium levels in the blood? ( mcq on Infectious Diseases with Answers )
A) Hypernatremia
B) Hyponatremia
C) Hyperkalemia
D) Hypokalemia
Option b – Hyponatremia
Which group of diseases is entirely bacterial in origin? ( MCQ on Infectious Diseases with Answers )
A) Influenza, Dengue, Cholera
B) Malaria, Common cold, Influenza
C) Dengue, Malaria, Cholera
D) Typhoid, Cholera, Tuberculosis
Option d – Typhoid, Cholera, Tuberculosis
Which serious and highly contagious bacterial infection primarily affects the mucous membranes of the nose and throat? ( MCQ on Infectious Diseases with Answers )
A) Shigellosis
B) Chlamydia
C) Meningococcal
D) Diphtheria
Option d – Diphtheria
Which condition, also known as icterus, causes yellowing of the skin and the whites of the eyes? ( MCQ on Infectious Diseases with Answers )
A) Pemphigus
B) Eczema
C) Ichthyosis
D) Jaundice
Option d – Jaundice
Anorexia Nervosa is an eating disorder characterized by which of the following? i) An abnormally heavy body weight ii) An intense fear of gaining weight iii) A distorted perception of body weight iv) Excessive exercise to lose weight
A) i and ii
B) ii and iii
C) iii and iv
D) ii and iv
Option c – iii and iv
Which virus is the primary cause of the common cold? ( MCQ on Infectious Diseases with Answers )
A) Rhinovirus
B) Hepatitis A
C) Influenza
D) Coronavirus
Option a – Rhinovirus
Pellagra is caused by a deficiency of which nutrient? ( MCQ on Infectious Diseases with Answers )
A) Iodine
B) Riboflavin
C) Vitamin E
D) Niacin
Option d – Niacin
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