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Name of the University : West Bengal University of Technology
Department : Biomedical Engineering
Degree : B.Tech
Sem : IV
Subject Code/Name : BME-401/Biomaterials
Website : wbut.ac.in
Document Type : Previous Year Examination Question Paper

Download Model/Sample Question Paper :
2009 : https://www.pdfquestion.in/uploads/qpaper.wbut.ac.in/6496-2009BME-401(1).pdf
2010 : https://www.pdfquestion.in/uploads/qpaper.wbut.ac.in/6496-2010BME%20-%20401.pdf
2011: https://www.pdfquestion.in/uploads/qpaper.wbut.ac.in/6496-2011BME%20-%20401(1).pdf
2012 : https://www.pdfquestion.in/uploads/qpaper.wbut.ac.in/6496-2012BME-401(2).pdf

WBUT Biomaterials Model Question Paper

Engineering & Management Examinations,
Semester – 4
Time : 3 Hours
Full Marks : 70
** The figures in the margin indicate full marks.
** Candidates are required to give their answers in their own words as far as practicable.

Related : West Bengal University of Technology BME302 Engineering Physiology & Anatomy B.Tech Question Paper : www.pdfquestion.in/6492.html

June – 2009

GROUP – A :
( Multiple Choice Type Questions )
1. Choose the correct alternatives for the following : 10 × 1 = 10
i) Polylactic acid ( PLA ) is
a) viable biomaterial b) non-viable biomaterial
c) inert biomaterial d) bioactive biomaterial.

ii) Collagen is a
a) carbohydrate b) protein
c) polysaccharide d) fat.

iii) Crystalline structure means
a) periodic alignment of unit cells b) random alignment of unit cells
c) ductile materials d) brittle materials.

iv) Albuminised surface is used to improve
a) tissue compatibility b) mechanical properties
c) blood compatibility d) contour.

v) Pyrogen is a
a) bacteria b) bacterial endotoxin
c) virus d) fungi.

vi) The bioactive dental material is
a) stainless steel b) aluminium
c) titanium d) gold.

vii) Bone is a/an
a) elastic material b) viscous material
c) isoelastic material d) hard material.

viii) The example of biodegradable polymer is
a) PVA b) UHMWPE
c) HDPE d) PHEMA.

ix) IOL is used in
a) ear b) eye
c) nose d) mouth.

x) What does exactly Epikeratoplasty do ?
a) Indent detached retina
b) replace lens containing cataracts
c) correct vision
d) change corneal curvature and correct vision.

GROUP – B : ( Short Answer Type Questions )
Answer any three of the following questions. 3 × 5 = 15
2. Define the term ‘biomaterials’. Classify biomaterials with appropriate examples. What are the basic criteria of biomaterials ? 5
3. Define the term ‘biocompatibility’. Mention different methods for improving blood and tissue compatibility problems. 5
4. Classify polymers and define each group. 5
5. Classify bio-ceramics with appropriate examples. Give the advantage and disadvantage of ceramic materials. 2
6. Define composite. What are the important features of composite biomaterials ? Classify composite biomaterials. 1 + 2 + 2

GROUP – C : ( Long Answer Type Questions )
Answer any three of the following questions. 3 × 15 = 45
7. Describe the effect of physiological fluid on the properties of biomaterials. Briefly explain the biological responses of biomaterials. 7 + 8
8. What are the different toxicity testing protocols for evaluation of a biomaterial ? Describe one in vitro and in vivo toxicity screening test for newer biomaterials. 6 + 9

9. Classify biomedical polymer with suitable examples. Briefly discuss the uses of biodegradable polymer in biomedical field. What are the importances of passive film layer for tissue adhesion ? Name at least three synthetic polymeric membranes and their application. 3 + 5 + 3 + 4

10. a) Name four mechanical testings.
b) Describe the tensile testing of a metallic biomaterial.
c) What are the data one can get from such a test regarding the mechanical properties of the material ?
d) What is fracture toughness ? 4 + 5 + 4 + 2

11. a) Name/classify different crystal systems.
b) Name different crystal defects.
c) What are the primary use of metallic implant materials ? Mention the uses of 316 L SS, Co-Cr alloy, Ti and its alloys in orthopaedic and dental surgery.
d) What are the possible biomedical uses of ceramics ?
e) Why are ceramic materials more advantageous metallic implant ?

12. Write short notes on any three of the following : 3 × 5
a) Dental implants
b) Problems of replacing human body parts
c) Artifical heart valves
d) PMMA-bone cement
e) Wear testing of biomaterials.

June – 2011

Time Allotted : 3 Hours
Full Marks : 70
** The figures in the margin indicate full marks.
** Candidates are required to give their answers in their own words as far as practicable.

GROUP – A : ( Multiple Choice Type Questions )
1. Choose the correct alternatives for the following : 10 × 1 = 10
i) The number of Bravias lattice is
a) 7 b) 14
c) 21 d) 28.

ii) Alumina is a
a) Inert Ceramics
b) Bioactive ceramics
c) Bioresorbable ceramics
d) None of these.

iii) Creep is
a) Permanent deformation of material as a function of time
b) Permanent deformation of material irrespective of time
c) Viscoelastic deformation of material as a function of time
d) Elastic deformation of material as a function of time.

iv) Resorbable suture is made from
a) silicone rubber
b) nylon
c) polylactic acid
d) polyvinyl chloride.

v) Carbon content of 316L SS is
a) 0·08% b) 0·03%
c) 2% d) 18%.

vi) The first phenomena during blood-material interaction is
a) platelet interaction
b) albumin adsorption
c) intrinsic coagulation
d) fibrinogen polymerization.

vii) Fretting is associated with
a) corrosion b) dissolution
c) absorption d) solution.

viii) Elastin is a
a) carbohydrate b) protein
c) polysaccharide d) fat.

ix) Crystal structure means
a) random alignment of unit cells
b) periodic alignment of unit cells
c) ductile material
d) brittle material.

x) Collagen is a
a) natural polymer
b) synthetic polymer
c) semi-synthetic polymer
d) protein.
GROUP – B : ( Short Answer Type Questions )
Answer any three of the following : 3 × 5 = 15
2. Define biomaterials. Classify biomaterials with examples. What are the basic criteria for biomaterials ?
3. Define the term “bioceramics” and classify with appropriate examples. What are glass ceramics and pyrolytic carbon ? 3 + 2
4. What is stress corrosion cracking ? How can it be prevented ?
5. What are the effects of host on the implant material when it is implanted in the body ? 5
6. What do you mean by passivation ? What are the factors influencing corrosion reaction ? 5
7. What are the different fracture fixation devices ? 5