MATERIALS SCIENCE — DU B.Sc. (Prog.) Applied Physical Science with Analytical Methods in Chemistry & Biochemistry Previous Year Question Papers

:Material Science : B.Sc. Grog) Analytical Chemistry ATTERET ANY FOUR QUHSTIONS (a) What are self-healing materials? Differentiate between intrinsic and extrinsic healing. a) Discuss emerging trends of 4D printing. (c) What are photo responsive material? Explain cis-trams isomerism exhibited by them. a) What are composite materials. Classify them on the basis of the matrix material. (c) 2.1g of coal is bumf in combustion tybe. The increase in weight of anhydrous Cac12 is 0.53 gin and increase in weight of KOH tube is 5.73 gin. Calculate the percentage of hydrogen and carbon in the given coal sample. (4, 5,6) (a) Explain hand lay-up method to prepare composites. Draw a neat diagram. (b) What is the role of nanoparticles and micelles.in controlled release drug delivery? (c) A Cac03 solution shows a transmittance of 90_%, when taken in a cell of 1.0 cm thickness. Calculate its concentration, if the molar absoxptivity coefficient is Q.4 Write short notes on ANY TIREE (a) Michelson Interferometer (b) Surface morphology (c) CENS characterization technique (a) Explain LCST and UCST phenomena of thermos-responsive polymers. (b) Discuss the cardiovascular applications of biomaterials. (c) Differentiate synthetic scaffolds fi.om natural ones. (a) Explain the contribution of lotus effect in bio-inspired and biomimetic materials? Give examples. a) What are the emerging trends and future prospects of AI-integrated materials? (c) How would you determine the percentage of nitrogen in a fixed amount of coal?