Iron is ____________________?
(A) paramagnetic
(B) ferromagnetic
(C) ferroelectric
(D) dielectric
(D) none of the above
Sulphur in pig iron tends to make it___________________?
(A) hard’
(B) soft
(C) ductile
(D) tough
(D) malleable
The following types of materials are usually the most ductile__________________?
(A) face-centred cubic lattice
(B) body-centred cubic lattice
(C) hexagonal close-packed lattice
(D) all of the above
(D) none of the above
In malleable iron, carbon is present in the form of___________________?
(A) cementite
(B) free carbon
(C) flakes
(D) spheroids
(D) nodular aggregates of graphite
In grey cast iron, carbon is present in the form of____________________?
(A) cementite
(B) free carbon
(C) flakes
(D) spheroids
(D) nodular aggregates of graphite
Solder is an alloy consisting of________________?
(A) tin, antimony, copper
(B) tin and copper
(C) tin and lead
(D) lead and zinc
(D) lead and copper
Inconel is an alloy of___________________?
(A) nickel, chromium and iron
(B) nickel, copper
(C) nickel, chromium
(D) nickel, zinc
(D) nickel, lead
A cold chisel is made of_______________?
(A) mild steel
(B) cast iron
(C) H.S.S.
(D) high carbon
(D) german silver
German silver is an alloy of___________________?
(A) silver and some impurities
(B) refined silver
(C) nickel, copper and zinc
(D) nickel and copper
(D) silver and gold
The basic constituents of Hastelloy are_________________?
(A) aluminium, copper etc
(B) nickel, molybdenum etc
(C) nickel, copper, etc
(D) all of the above
(D) none of the above