Fire clay
Silica
Low thermal conductivity
High electrical conductivity
✅ The correct answer is option A.
Materials and Construction MCQs
Materials having __________ lattice structure are usually most ductile.
F.c.c.
B.c.c.
H.c.p.
Cubic
✅ The correct answer is option A.
Carbon is present in steel wholly in the
Combined form
Free state as graphite
Both A & B
Neither A nor B
✅ The correct answer is option A.
The electrical conductivity of a __________ decreases with rise in temperature.
Metal/alloy
Semi-conductor
Dielectric
None of these
✅ The correct answer is option A.
Soap kettle used in the production of laundry soap is made of
Steel with top section nickel clad or stainless steel
Cast iron
Nickel
Concrete
✅ The correct answer is option A.
As the impurities are oxidised, the melting point of iron
Decreases
Remains unchanged
Increases
May increase or decrease ; unpredictable
✅ The correct answer is option C.
A hardened steel essentially contains
Sorbite
Troostite
Martensite
None of these
✅ The correct answer is option C.
Condenser tubes are not made of
Cartridge brass
Muntz brass
Wood metal
Aluminium brass alloy
✅ The correct answer is option C.
German silver is an alloy of copper, nickel and
Zinc
Silver
Tin
Lead
✅ The correct answer is option A.
A material capable of undergoing large permanent deformation, when subjected to tension is termed as
Friable
Ductile
Brittle
None of these
✅ The correct answer is option B.