Category: Engineering Materials

A. cast iron
B. pig iron
C. wrought iron
D. malleable iron
E. white iron

A. improves wear resistance, cutting ability and toughness
B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant proper¬ties
C. improves cutting ability and reduces hardenability
D. gives ductility, toughness, tensile strength and anticorrosion properties
E. none of the above

A. acidic
B. basic
C. neutral
D. brittle
E. none of the above

A. elastic properties in all directions
B. stresses induced in all directions
C. thermal properties in all directions
D. electric and magnetic properties in all directions
E. density throughout

A. ferrite
B. pearlite
C. anstenite
D. ferrite and cementite
E. ferrite and pearlite

A. copper
B. brass
C. lead
D. silver
E. aluminium

A. cobalt
B. nickel
C. vanadium
D. iron
E. carbon

A. relieve stresses
B. harden steel slightly
C. improve machining characteristic
D. soften material
E. permit further cold working

A. body centred cubic
B. face centred cubic
C. hexagonal close packed
D. cubic structure
E. orthorhombic crystal

A. 0.5 to 1%
B. 1 – 2%
C. 2.5 to 4.5%
D. 5 – 7%
E. 7-9%.