“The Knowledge Library”

Knowledge for All, without Barriers……….
An Initiative by: Kausik Chakraborty.

The Knowledge Library

MCQs on Health & Medicines

Q. Which vitamin is primarily obtained from sunlight? 

   A) Vitamin A 

   B) Vitamin C 

   C) Vitamin D 

   D) Vitamin K 

   Answer: C) Vitamin D

Q. What is the recommended daily intake of water for an average adult? 

   A) 2-3 cups 

   B) 5-6 cups 

   C) 8-10 cups 

   D) 12-15 cups 

   Answer: C) 8-10 cups

Q. Which nutrient is essential for building and repairing tissues? 

   A) Carbohydrates 

   B) Fats 

   C) Proteins 

   D) Vitamins 

   Answer: C) Proteins

Q. What is the primary cause of obesity? 

   A) Lack of exercise 

   B) Poor diet 

   C) Genetic factors 

   D) All of the above 

   Answer: D) All of the above

Q. Which mineral is crucial for strong bones and teeth? 

   A) Iron 

   B) Magnesium 

   C) Calcium 

   D) Sodium 

   Answer: C) Calcium

Q. Which part of the brain regulates hunger and thirst? 

   A) Cerebrum 

   B) Cerebellum 

   C) Hypothalamus 

   D) Medulla oblongata 

   Answer: C) Hypothalamus

Q. What is the primary function of red blood cells?  

   A) Fight infections 

   B) Carry oxygen 

   C) Remove waste products 

   D) Clot blood 

   Answer: B) Carry oxygen

Q. Which food group is the primary source of energy for the body? 

   A) Proteins 

   B) Carbohydrates 

   C) Fats 

   D) Vitamins 

   Answer: B) Carbohydrates

Q. Which type of fat is considered the healthiest? 

    A) Saturated fat 

    B) Trans fat 

    C) Unsaturated fat 

    D) Hydrogenated fat 

    Answer: C) Unsaturated fat

Q. What is the largest organ in the human body? 

    A) Heart 

    B) Liver 

    C) Skin 

    D) Lungs 

    Answer: C) Skin

Q. How many bones are in the adult human body? 

    A) 200 

    B) 206 

    C) 216 

    D) 226 

    Answer: B) 206

Q. Which organ is responsible for filtering blood and producing urine? 

    A) Liver 

    B) Lungs 

    C) Kidneys 

    D) Pancreas 

    Answer: C) Kidneys

Q. The human heart has how many chambers? 

    A) 2 

    B) 3 

    C) 4 

    D) 5 

    Answer: C) 4

Q. Which blood vessels carry blood away from the heart? 

    A) Veins 

    B) Arteries 

    C) Capillaries 

    D) Lymphatics 

    Answer: B) Arteries

Q. What is the function of platelets in the blood? 

    A) Transport oxygen 

    B) Fight infection 

    C) Clot blood 

    D) Carry nutrients 

    Answer: C) Clot blood

Q. Which part of the digestive system is primarily responsible for nutrient absorption? 

    A) Stomach 

    B) Small intestine 

    C) Large intestine 

    D) Esophagus 

    Answer: B) Small intestine

Q. What is the primary function of the liver? 

    A) Pump blood 

    B) Digest food 

    C) Detoxify chemicals 

    D) Produce insulin 

    Answer: C) Detoxify chemicals

Q. Which gland in the human body produces insulin? 

    A) Thyroid 

    B) Pancreas 

    C) Adrenal 

    D) Pituitary 

    Answer: B) Pancreas

Q. The brain is divided into how many lobes? 

    A) 2 

    B) 3 

    C) 4 

    D) 5 

    Answer: C) 4

Q. Which disease is caused by the deficiency of vitamin C? 

    A) Rickets 

    B) Scurvy 

    C) Beriberi 

    D) Pellagra 

    Answer: B) Scurvy

Q. Which condition is characterized by high blood sugar levels? 

    A) Hypoglycemia 

    B) Hyperthyroidism 

    C) Diabetes 

    D) Anemia 

    Answer: C) Diabetes

Q. What is the most common type of cancer in women worldwide? 

    A) Lung cancer 

    B) Breast cancer 

    C) Skin cancer 

    D) Ovarian cancer 

    Answer: B) Breast cancer

Q. Which viral infection affects the liver and can cause chronic disease? 

    A) Hepatitis B 

    B) HIV 

    C) Influenza 

    D) Dengue 

    Answer: A) Hepatitis B

Q. Which of the following is a common symptom of a stroke? 

    A) Chest pain 

    B) Severe headache 

    C) Sudden numbness or weakness 

    D) Fever 

    Answer: C) Sudden numbness or weakness

Q. Which autoimmune disease causes the body to attack its own tissues? 

    A) Asthma 

    B) Lupus 

    C) Diabetes 

    D) Hypertension 

    Answer: B) Lupus

Q. What is the most common cause of anemia? 

    A) Iron deficiency 

    B) Vitamin D deficiency 

    C) Protein deficiency 

    D) Calcium deficiency 

    Answer: A) Iron deficiency

Q. Which neurological disorder is characterized by seizures? 

    A) Parkinson’s disease 

    B) Multiple sclerosis 

    C) Epilepsy 

    D) Alzheimer’s disease 

    Answer: C) Epilepsy

Q. What is the primary cause of chronic obstructive pulmonary disease (COPD)? 

    A) Smoking 

    B) Air pollution 

    C) Genetics 

    D) Alcohol consumption 

    Answer: A) Smoking

Q. Which bacterial infection is known for causing severe diarrhea, often leading to dehydration? 

    A) Tuberculosis 

    B) Cholera 

    C) Meningitis 

    D) Syphilis 

    Answer: B) Cholera

Q. Which vitamin is essential for blood clotting? 

    A) Vitamin A 

    B) Vitamin C 

    C) Vitamin D 

    D) Vitamin K 

    Answer: D) Vitamin K

Q. Which mineral is important for oxygen transport in the blood? 

    A) Calcium 

    B) Potassium  

    C) Iron 

    D) Sodium 

    Answer: C) Iron

Q. Which nutrient is the primary source of energy for the brain? 

    A) Fats 

    B) Proteins 

    C) Carbohydrates 

    D) Vitamins 

    Answer: C) Carbohydrates

Q. Which food is a good source of omega-3 fatty acids? 

    A) Olive oil 

    B) Salmon 

    C) Chicken 

    D) Beef 

    Answer: B) Salmon

Q. Which vitamin is most commonly associated with boosting the immune system? 

    A) Vitamin A 

    B) Vitamin C  

    C) Vitamin E 

    D) Vitamin K 

    Answer: B) Vitamin C

Q. Which dietary component is most effective in lowering cholesterol levels? 

    A) Saturated fats 

    B) Trans fats 

    C) Fiber 

    D) Protein 

    Answer: C) Fiber

Q. Which of the following foods is high in antioxidants? 

    A) White bread 

    B) Processed cheese 

    C) Blueberries 

    D) Bacon 

    Answer: C) Blueberries

Q. What is the main function of dietary fiber? 

    A) Provide energy 

    B) Build muscle 

    C) Aid digestion 

    D) Strengthen bones 

    Answer: C) Aid digestion

Q. Which vitamin helps with the absorption of calcium? 

    A) Vitamin A 

    B) Vitamin B12 

    C) Vitamin C 

    D) Vitamin D 

    Answer: D) Vitamin D

Q. Which of the following is a source of complete protein? 

    A) Rice 

    B) Beans 

    C) Quinoa 

    D) Corn 

    Answer: C) Quinoa

Q. Which organization is responsible for international public health? 

    A) FDA 

    B) CDC 

    C) WHO 

    D) NIH 

    Answer: C) WHO

Q. Which term describes the study of the distribution and determinants of health-related states in populations? 

    A) Microbiology 

    B) Pathology 

    C) Epidemiology 

    D) Virology 

    Answer: C) Epidemiology

Q. Which vaccine-preventable disease is characterized by a red rash and high fever? 

    A) Polio 

    B) Measles 

    C) Tetanus 

    D) Hepatitis 

    Answer: B) Measles

Q. Which of the following is a waterborne disease? 

    A) Malaria 

    B) Dengue 

    C) Typhoid fever 

    D) Rabies 

    Answer: C) Typhoid fever

Q. What is the term for an outbreak of a disease that spreads across a large region, such as multiple countries or continents? 

    A) Endemic 

    B) Epidemic 

    C) Pandemic 

    D) Sporadic 

    Answer: C) Pandemic

Q. Which method is commonly used to prevent the spread of airborne diseases? 

    A) Wearing masks 

    B) Drinking clean water 

    C) Using insect repellent 

    D) Cooking food thoroughly 

    Answer: A) Wearing masks

Q. Which of the following is considered a non-communicable disease? 

    A) Tuberculosis 

    B) Influenza 

    C) Diabetes 

    D) Cholera 

    Answer: C) Diabetes

Q. Which insect is primarily responsible for the spread of malaria? 

    A) Housefly 

    B) Mosquito 

    C) Tick 

    D) Flea 

    Answer: B) Mosquito

Q. Which public health measure is used to identify individuals who may have been exposed to a contagious disease? 

    A) Isolation 

    B) Quarantine 

    C) Vaccination 

    D) Disinfection 

    Answer: B) Quarantine

Q. Which of the following is a common indicator of malnutrition in children? 

    A) High fever 

    B) Swollen abdomen 

    C) Cough 

    D) Rash 

    Answer: B) Swollen abdomen

Q. Which disorder is characterized by persistent sadness and loss of interest? 

    A) Anxiety 

    B) Schizophrenia 

    C) Depression 

    D) Bipolar disorder 

    Answer: C) Depression

Q. Which mental health disorder involves extreme mood swings? 

    A) Anxiety 

    B) OCD 

    C) Depression 

    D) Bipolar disorder 

    Answer: D) Bipolar disorder

Q. Which condition is often described as having persistent, excessive worry? 

    A) Depression 

    B) Anxiety disorder 

    C) PTSD 

    D) Schizophrenia 

    Answer: B) Anxiety disorder

Q. What is the most common treatment for severe depression? 

    A) Antibiotics 

    B) Insulin therapy 

    C) Antidepressants 

    D) Radiation therapy 

    Answer: C) Antidepressants

Q. Which disorder involves recurring, unwanted thoughts and repetitive behaviors? 

    A) ADHD 

    B) OCD 

    C) PTSD 

    D) Autism 

    Answer: B) OCD

Q. Which type of therapy is often used to treat phobias? 

    A) Cognitive-behavioral therapy 

    B) Electroconvulsive therapy 

    C) Group therapy 

    D) Art therapy 

    Answer: A) Cognitive-behavioral therapy

Q. Which of the following is a symptom of schizophrenia? 

    A) Panic attacks 

    B) Hallucinations 

    C) Overeating 

    D) Memory loss 

    Answer: B) Hallucinations

Q. Which mental health condition is characterized by flashbacks and severe anxiety following a traumatic event? 

    A) ADHD 

    B) OCD 

    C) PTSD 

    D) Bipolar disorder 

    Answer: C) PTSD

Q. What is the primary cause of Alzheimer’s disease? 

    A) Genetic mutation 

    B) Vitamin deficiency 

    C) Brain injury 

    D) Age-related changes in the brain 

    Answer: D) Age-related changes in the brain

Q. Which neurotransmitter is primarily associated with mood regulation? 

    A) Dopamine 

    B) Acetylcholine 

    C) Serotonin 

    D) GABA 

    Answer: C) Serotonin

Q. Which of the following is an analgesic? 

    A) Paracetamol 

    B) Amoxicillin 

    C) Insulin 

    D) Metformin 

    Answer: A) Paracetamol

Q. Which drug is commonly used to treat bacterial infections? 

    A) Ibuprofen 

    B) Amoxicillin 

    C) Aspirin 

    D) Diazepam 

    Answer: B) Amoxicillin

Q. What is the antidote for acetaminophen (paracetamol) overdose? 

    A) Naloxone 

    B) Vitamin K 

    C) N-acetylcysteine 

    D) Atropine 

    Answer: C) N-acetylcysteine

Q. Which medication is used to manage high blood pressure? 

    A) Metformin 

    B) Lisinopril 

    C) Omeprazole 

    D) Warfarin 

    Answer: B) Lisinopril

Q. Which class of drugs is used to treat anxiety disorders? 

    A) Antihistamines 

    B) Beta-blockers 

    C) Benzodiazepines 

    D) Statins 

    Answer: C) Benzodiazepines

Q. Which of the following is a common side effect of opioids? 

    A) Diarrhea 

    B) Constipation 

    C) Insomnia 

    D) Increased appetite 

    Answer: B) Constipation

Q. Which drug is used as an anticoagulant to prevent blood clots? 

    A) Aspirin 

    B) Warfarin 

    C) Metformin 

    D) Ibuprofen 

    Answer: B) Warfarin

Q. Which medication is commonly used to lower cholesterol levels? 

    A) Insulin 

    B) Statins 

    C) Diuretics 

    D) Antacids 

    Answer: B) Statins

Q. Which drug is used in the treatment of type 2 diabetes? 

    A) Paracetamol 

    B) Ibuprofen 

    C) Metformin 

    D) Lisinopril 

    Answer: C) Metformin

Q. Which drug is used to reverse opioid overdose? 

    A) Naloxone 

    B) Epinephrine 

    C) Diazepam 

    D) Albuterol 

    Answer: A) Naloxone

Q. Which procedure involves the removal of the gallbladder? 

    A) Appendectomy 

    B) Cholecystectomy 

    C) Gastrectomy 

    D) Hysterectomy 

    Answer: B) Cholecystectomy

Q. Which surgery is performed to remove the appendix? 

    A) Colectomy 

    B) Appendectomy 

    C) Laparotomy 

    D) Thoracotomy  

    Answer: B) Appendectomy

Q. Which of the following is a minimally invasive surgical procedure? 

    A) Laparoscopy 

    B) Craniotomy 

    C) Thoracotomy 

    D) Gastrectomy 

    Answer: A) Laparoscopy

Q. Which procedure is used to diagnose and treat heart conditions? 

    A) Endoscopy 

    B) Colonoscopy 

    C) Angiography 

    D) Laryngoscopy 

    Answer: C) Angiography

Q. Which medical procedure involves visual examination of the interior of a joint? 

    A) Arthroscopy 

    B) Endoscopy 

    C) Colonoscopy 

    D) Bronchoscopy 

    Answer: A) Arthroscopy

Q. Which surgical procedure is used to treat coronary artery disease? 

    A) Angioplasty 

    B) Nephrectomy 

    C) Mastectomy 

    D) Craniotomy 

    Answer: A) Angioplasty

Q. Which type of surgery is performed to remove a kidney? 

    A) Hepatectomy 

    B) Nephrectomy 

    C) Cystectomy 

    D) Gastrectomy 

    Answer: B) Nephrectomy

Q. Which procedure is used to deliver a baby surgically? 

    A) Hysterectomy 

    B) Laparoscopy 

    C) Cesarean section 

    D) Episiotomy 

    Answer: C) Cesarean section

Q. Which medical test measures electrical activity in the heart? 

    A) EEG 

    B) MRI  

    C) ECG 

    D) X-ray 

    Answer: C) ECG

Q. Which procedure involves removing tissue for diagnostic examination? 

    A) Endoscopy 

    B) Biopsy 

    C) Angiography 

    D) Arthroscopy 

    Answer: B) Biopsy

Q. Which cells are primarily responsible for producing antibodies? 

    A) Red blood cells 

    B) T cells 

    C) B cells 

    D) Platelets 

    Answer: C) B cells

Q. Which type of immunity is obtained through vaccination? 

    A) Passive immunity 

    B) Active immunity 

    C) Innate immunity 

    D) Autoimmunity 

    Answer: B) Active immunity

Q. Which of the following is a viral infection? 

    A) Tuberculosis 

    B) Malaria 

    C) Influenza 

    D) Tetanus 

    Answer: C) Influenza

Q. Which vaccine is recommended for preventing cervical cancer? 

    A) Hepatitis B vaccine 

    B) MMR vaccine 

    C) HPV vaccine 

    D) Varicella vaccine 

    Answer: C) HPV vaccine

Q. Which of the following diseases is caused by a prion? 

    A) HIV/AIDS 

    B) Creutzfeldt-Jakob disease 

    C) Rabies 

    D) Lyme disease 

    Answer: B) Creutzfeldt-Jakob disease

Q. Which of the following is a bacterial infection?  

    A) Malaria 

    B) Tuberculosis 

    C) Measles 

    D) Influenza 

    Answer: B) Tuberculosis

Q. What is the term for a disease that can be transmitted from animals to humans? 

    A) Nosocomial infection 

    B) Zoonosis 

    C) Vector-borne disease 

    D) Endemic disease 

    Answer: B) Zoonosis

Q. Which of the following is a vector-borne disease? 

    A) Diabetes 

    B) Malaria 

    C) Hypertension 

    D) Obesity 

    Answer: B) Malaria

Q. Which of the following is the body’s first line of defence against pathogens? 

    A) Antibodies 

    B) T cells 

    C) Skin 

    D) B cells 

    Answer: C) Skin

Q. Which type of white blood cell is most involved in allergic reactions? 

    A) Neutrophils 

    B) Eosinophils 

    C) Lymphocytes 

    D) Monocytes 

    Answer: B) Eosinophils

Q. Which pollutant is most commonly associated with respiratory problems? 

    A) Lead 

    B) Carbon monoxide 

    C) Sulfur dioxide 

    D) Nitrogen dioxide 

    Answer: C) Sulfur dioxide

Q. Which of the following is a major source of indoor air pollution? 

    A) Industrial emissions 

    B) Car exhaust 

    C) Tobacco smoke 

    D) Agricultural runoff 

    Answer: C) Tobacco smoke

Q. Which type of radiation is considered most harmful to human health? 

    A) Ultraviolet radiation 

    B) Infrared radiation 

    C) Gamma radiation 

    D) Microwaves 

    Answer: C) Gamma radiation

Q. Which environmental factor is a leading cause of skin cancer? 

    A) Air pollution 

    B) Water pollution 

    C) UV radiation 

    D) Noise pollution 

    Answer: C) UV radiation

Q. Which of the following is a key factor in climate change? 

    A) Ozone depletion 

    B) Greenhouse gas emissions 

    C) Deforestation 

    D) All of the above 

    Answer: D) All of the above

Q. Which gas is a major contributor to the greenhouse effect? 

    A) Oxygen 

    B) Nitrogen 

    C) Carbon dioxide 

    D) Argon 

    Answer: C) Carbon dioxide

Q. What is the primary health risk associated with contaminated drinking water? 

    A) Respiratory infections 

    B) Skin cancer 

    C) Waterborne diseases  

    D) Hearing loss 

    Answer: C) Waterborne diseases

Q. Which of the following is a renewable source of energy? 

    A) Coal 

    B) Natural gas 

    C) Solar power 

    D) Nuclear power 

    Answer: C) Solar power

Q. Which pollutant is most commonly associated with acid rain? 

    A) Carbon monoxide 

    B) Methane 

    C) Sulfur dioxide 

    D) Ozone 

    Answer: C) Sulfur dioxide

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