This document contains important questions from chapters 1-7 of the subject Material Science and Metallurgy. It includes definitions, concepts and processes related to engineering materials, phase diagrams, metallurgical microscopes, metals and alloys, non-metallic materials, corrosion, electrolysis, powder metallurgy, and lubricants. Specifically, it lists over 150 questions across the various chapters and provides definitions or explanations for key terms like space lattice, unit cell, crystal structure, phase diagrams, heat treatments, metallography, alloying elements, corrosion types, electroplating, sintering, and lubricant properties.

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MATERIAL SCIENCE AND METALLURGY
IMPORTANT QUESTIONS :
Ch. 1 --> Engineering materials
[1] Define : (i) space lattice, (ii) Unit cell, (iii) crystal, (iv) grain, (v) grain boundary,
(vi) toughness, (vii) creep, (viii) fatigue.
[2] State the factors to be considered while selecting materials.
[3] State types of bonds.
[4] Explain primary and secondary bonds.
[5] Give properties of ionic solids.
[6] State physical/chemical/thermal/electrical/electro-magnetic properties of
materials. (and explain any one of them.)
[7] Draw structure of B.C.C., F.C.C. and H.C.P.
[8] State effects of grain boundary and grain size on the properties of metal.
Ch. 2 --> Phase Diagrams
[1] What is a phase/equilibrium diagram ?
[2] Define solid solution and give examples.
[3] State four properties of solid solution.
[4] Define heat treatment and list heat treatment processes.
[5] Define hat treatment and state its objectives.
[6] Write properties of solid solution.
[7] What is any alloy ? List alloying elements added to steel.
[8] State the reasons of alloying steel.
[9] What is cooling curve & draw cooling curve of metal & compound.
[10] Write steps to draw equilibrium diagram with the help of cooling curve.
[11] State lever rule & explain it.
[12] Draw TTT curve and state its need and applications.
[13] Draw a neat sketch of Iron-Carbon Equilibrium diagram.
[14] List the types of furnaces and explain any one furnace.
[15] State the purpose of hardening and normalizing.
[16] Explain Annealing/Hardening/Nitriding/Normalising/Induction hardening process.
[17] Define annealing and state its objectives.
[18] Write short note on flame hardening process/carburising process.
Ch. 3 --> Metallurgical Microscope
[1] Define microstructure and macrostructure.
[2] List different parts of metallurgical microscope.
[3] Explain working of metallurgical microscope using diagram.
[4] State steps of preparing a micro specimen for microscopic examination in
sequence.
[5] List materials and equipments necessary for preparation of micro specimen.
[6] State precautions to be carried out while using a microscope.
Ch. 4 --> Metals & its alloys
[1] List major (four) steel plants of India.
[2] Classify plain carbon steel according to carbon content.
[3] State four limitations of plain carbon steel.
[4] Draw flow diagram of production of iron and steel.
[5] Classify ferrous metals.
[6] Write compostion, properties and uses of (i) white cast iron, (ii) malleable cast
iron, (iii) nodular cast iron.

2. [7] State the effect of any six alloying elements on properties of steel.
(i) manganse, (ii) silicon, (iii) nickle, (iv) tungsten, (v) sulphur,
(vi) aluminium, (vii) phosphorous, (viii) copper.
[8] Write short note on effect of alloying elements in properties of C.I.
[9] Write meaning of following designation : (i) C15, (ii) St 42 KW, (iii) T90, (iv)
25Cr4Mo2G, (v) 65TS5.
[10] Enlist copper alloys and discuss any one alloy of copper.
[11] State four engineering uses of copper giving reasons for its selection.
[12] Write properties of brass which it a good engineering material.
[13] Write composition and use of gun metal.
[14] Compare brass and bronze.
[15] State important properties of aluminium for its selection in different engg. uses.
[16] State application of aluminium in engg. stating reason for selection.
[17] Write properties & uses of duralumin and hindalium.
[18] State different bearing alloys and describe any two.
[19] Write short note on bearing material.
Ch. 5 --> Electrolysis
[1] Classify non-metallic materials.
[2] List ceramic materials.
[3] Difference between thermoplastic & thermosetting plastic.
[4] Write uses of following : (i) polyvinyl chloride, (ii) acrylic, (iii) polyethylene,
(iv) thermocole, (v) fire brickes, (vi)
[5] Write short note on composite materials.
[6] Write short note on rubber.
[7] Classify rubber.
[8] Explain vulcanising process.
[9] Write industrial usus of rubber.
[10] List various ceramic materials.
[11] What is refractory material ? State its basic properties.
[12] Classify insulating materials and state their properties.
[13] What is an abrasive ? State different abrasive materials.
Ch. 6 --> Electrolysis
[1] State the types of corrosion and describe any one of them.
OR State different types of corrosion and explain pitting corrosion.
[2] Explain uniform corrosion and pitting corrosion.
[3] List tpes of electrolysis.
[4] Explain with neat sketch standard conditions and hydrogen electrode.
[5] State industrial applications of electrolysis.
[6] Draw surface coating setup for electroplating and explain its working.
Ch. 7 --> Fluid and powder materials
[1] Explain powder metallurgy in brief and where it is applicable.
OR Short note on powder metallurgy.
[2] Why surface coating is done ? List the surface coating methods.
[3] Explain sintering process. State difference between sintering and pre-sintering.
[4] List the powder materials.
[5] State the applications of coolant or cutting fluid in mechanical engineering.
[6] List properties of lubricating oil.
[7] State uses of lubricating oil.
[8] List products of powder metallurgy.
[9] Define : (i) viscosity, (ii) fire point, (iii) flash point, (iv) pour point, (v) cloud
point.
[10] Need of mixing & blending powder. Explain.