Biomaterials – MCQs September 2, 2025 by u930973931_answers 50 Score: 0 Attempted: 0/50 Subscribe 1. Which of the following is considered the first generation of biomaterials? (A) Bioactive glasses (B) Polymers (C) Metals and alloys (D) Smart materials 2. Which property is most important for orthopedic implant biomaterials? (A) Biodegradability (B) Electrical conductivity (C) High mechanical strength (D) Magnetism 3. Which polymer is commonly used in sutures? (A) Polyethylene glycol (B) Polylactic acid (C) Polypropylene (D) Polyurethane 4. What is the main disadvantage of metallic biomaterials? (A) High strength (B) Corrosion (C) Biocompatibility (D) Durability 5. Which biomaterial is most suitable for heart valves? (A) Ceramics (B) Polymers (C) Metals (D) Composites 6. Hydroxyapatite is primarily used in: (A) Cardiovascular implants (B) Orthopedic and dental implants (C) Neural implants (D) Contact lenses 7. Which material is most commonly used for dental fillings? (A) Stainless steel (B) Amalgam (C) Polylactic acid (D) Hydrogel 8. Which of the following is bioresorbable? (A) Titanium (B) Stainless steel (C) Polyglycolic acid (D) Alumina 9. Which property defines the ability of a material to perform in a specific application without adverse effects? (A) Durability (B) Biocompatibility (C) Elasticity (D) Hardness 10. Which alloy is most widely used in orthopedic implants? (A) Brass (B) Titanium alloy (C) Copper alloy (D) Bronze 11. Which polymer is commonly used in contact lenses? (A) Polyethylene (B) Polymethyl methacrylate (C) Polystyrene (D) Polypropylene 12. Which type of biomaterial is bioinert? (A) Alumina (B) Collagen (C) Polyglycolic acid (D) Hydrogel 13. What is the main limitation of ceramic biomaterials? (A) Low hardness (B) Brittleness (C) Corrosion (D) Flexibility 14. Which natural polymer is used in tissue engineering? (A) Collagen (B) Nylon (C) Teflon (D) Polyester 15. Which metallic biomaterial has the best corrosion resistance? (A) Stainless steel (B) Titanium (C) Cobalt-chromium alloy (D) Magnesium 16. Which type of biomaterial mimics natural tissue functions? (A) Bioactive (B) Bioinert (C) Bioresorbable (D) Composite 17. Which test evaluates the blood compatibility of biomaterials? (A) Tensile test (B) Hemocompatibility test (C) Hardness test (D) Fatigue test 18. Which polymer is used in drug delivery systems? (A) Polyethylene (B) Polyvinyl chloride (C) Polyethylene glycol (D) Nylon 19. The modulus of elasticity of bone is closest to: (A) Titanium (B) Stainless steel (C) Cobalt alloys (D) Polymers 20. Which type of ceramics are used in hip replacements? (A) Alumina and zirconia (B) Porcelain (C) Glass ceramics (D) Silica 21. Which material is used in biodegradable stents? (A) Stainless steel (B) Titanium (C) Magnesium alloys (D) Alumina 22. Which property of hydrogels makes them useful in biomedical applications? (A) High strength (B) High water content (C) Electrical conductivity (D) Magnetism 23. What is the major concern for metallic implants in MRI? (A) Heat conduction (B) Magnetic interference (C) Corrosion (D) Wear resistance 24. Which material is known as “smart biomaterial”? (A) Shape memory alloys (B) Stainless steel (C) Polypropylene (D) Amalgam 25. Which coating improves implant osseointegration? (A) Hydroxyapatite coating (B) Zinc coating (C) Silver coating (D) Gold coating 26. Which metallic alloy is often used in dental implants? (A) Brass (B) Titanium alloy (C) Bronze (D) Copper alloy 27. What is the main function of biomaterials in tissue engineering? (A) Provide mechanical strength (B) Act as scaffolds for cell growth (C) Replace tissues permanently (D) Increase conductivity 28. Which property of polymers can be tailored easily? (A) Elastic modulus (B) Biodegradability (C) Density (D) Hardness 29. Which natural polymer is used as a wound dressing? (A) Teflon (B) Collagen (C) Polypropylene (D) Nylon 30. Which synthetic polymer is used in artificial joints? (A) Polyethylene (B) Polycarbonate (C) Polystyrene (D) Polyvinyl chloride 31. Which property of bone makes it a composite material? (A) Combination of collagen and hydroxyapatite (B) High hardness (C) Low density (D) High strength 32. Which metallic element is toxic in high concentrations in implants? (A) Titanium (B) Nickel (C) Magnesium (D) Aluminum 33. Which property is essential for cardiovascular biomaterials? (A) Optical clarity (B) Hemocompatibility (C) Magnetism (D) Brittleness 34. Which polymer is used in bone cement? (A) Polymethyl methacrylate (B) Polypropylene (C) Polyurethane (D) Nylon 35. Which biomaterial is used for corneal implants? (A) PMMA (B) Polypropylene (C) Hydroxyapatite (D) Stainless steel 36. Which type of wear is most common in orthopedic implants? (A) Adhesive wear (B) Abrasive wear (C) Fatigue wear (D) Corrosive wear 37. Which is considered the second generation of biomaterials? (A) Bioinert materials (B) Bioactive and biodegradable materials (C) Metals and alloys (D) Natural polymers 38. Which test measures the mechanical strength of biomaterials? (A) Tensile test (B) Hemolysis test (C) Cytotoxicity test (D) Histology test 39. Which material is considered bioinert in orthopedic applications? (A) Zirconia (B) Collagen (C) Polylactic acid (D) Polyurethane 40. Which metal is mainly used in cardiovascular stents? (A) Stainless steel (B) Magnesium (C) Titanium (D) Silver 41. Which property of polymers makes them suitable for drug delivery? (A) Elasticity (B) Biodegradability (C) Hardness (D) Conductivity 42. Which type of material combines metals, ceramics, and polymers? (A) Composite (B) Smart materials (C) Alloys (D) Bioinert 43. Which material is best suited for load-bearing implants? (A) Ceramics (B) Metals (C) Polymers (D) Hydrogels 44. Which property of biomaterials prevents immune rejection? (A) Biocompatibility (B) Density (C) Hardness (D) Strength 45. Which ceramic material is used for bone graft substitutes? (A) Alumina (B) Hydroxyapatite (C) Silica (D) Zirconia 46. Which property is improved by surface modification of biomaterials? (A) Biocompatibility (B) Density (C) Hardness (D) Elastic modulus 47. Which is an example of degradable metallic biomaterial? (A) Titanium (B) Magnesium (C) Stainless steel (D) Cobalt-chromium 48. Which polymer is commonly used in vascular grafts? (A) Teflon (PTFE) (B) Nylon (C) Polypropylene (D) PVC 49. Which property of smart biomaterials allows them to respond to stimuli? (A) Brittleness (B) Stimuli-responsiveness (C) Hardness (D) Elasticity 50. Which generation of biomaterials includes tissue engineering and gene-activated materials? (A) First generation (B) Second generation (C) Third generation (D) Fourth generation