Engineering Materials

A. made by adding carbon in steel
B. refined from cast iron
C. an alloy of iron and carbon with varying quantities of phosphorus and sulphur
D. extensively used for making cutting tools
E. extremely brittle

A. which are destroyed by burning
B. which after their destruction are recycled to produce fresh steel
C. which are deoxidised in the ladle with silicon and aluminium
D. in which carbon is completely burnt
E. which have poor properties due to improper manufacturing

A. carbon
B. vanadium
C. manganese
D. cobalt
E. copper

A. 0.025%
B. 0.06%
C. 0.1%
D. 0.25%
E. 0.8%.

A. chromium and nickel
B. sulphur, phosphorus, lead
C. vanadium, aluminium
D. tungsten, molybdenum, vanadium, chromium
E. zinc

A. mild steel
B. alloy steel
C. high carbon
D. tungsten steel
E. cast iron steel

A. providing corrosion resistance
B. improving machining properties
C. providing high strength at elevated temperatures
D. raising the elastic limit
E. improving the resilience and ductility

A. 0.02%
B. 0.3%
C. 0.63%
D. 0.8%
E. 1.2%.

A. nickel, copper
B. nickel, molybdenum
C. zinc, tin, lead
D. nickel, lead and tin
E. none of the above

A. silver metal
B. duralumin
C. Hastelloy
D. monel metal
E. invar