A. 1% silver
B. 2.5% silver
C. 5% silver
D. 10% silver
E. 100% silver
Related Mcqs:
- German silver is an alloy of___________________?
A. silver and some impurities
B. refined silver
C. nickel, copper and zinc
D. nickel and copper
E. silver and gold - Monel metal contains_________________?
A. 63 to 67% nickel and 30% copper
B. 88% copper and 10% tin and rest zinc
C. alloy of tin, lead and cadmium
D. malleable iron and zinc
E. none of the above - Specific weight of sea water is more that of pure water because it contains_________________?
A. dissolved air
B. dissolved salt
C. suspended matter
D. all of the above
E. heavy water - The composition of silver solder is ___________________?
A. silver, copper, zinc
B. silver, tin, nickel
C. silver, lead, zinc
D. silver, copper, aluminium
E. silver, lead, tin - The percentage of carbon in grey iron castings usually varies between __________________?
A. 0.5 to 1%
B. 1 – 2%
C. 2.5 to 4.5%
D. 5 – 7%
E. 7-9%. - Materials after cold working are subjected to following process to relieve stresses__________________?
A. hot working
B. tempering
C. normalising
D. annealing
E. special heat treatment - Corrosion resistance of steel is increased by addition of________________?
A. chromium and nickel
B. sulphur, phosphorus, lead
C. vanadium, aluminium
D. tungsten, molybdenum, vanadium, chromium
E. zinc - Tungsten in high speed steel provides________________?
A. hot hardness
B. toughness
C. wear resistance
D. sharp cutting edge
E. cold hardness - Tungsten in steel________________?
A. improves wear resistance, cutting ability and toughness
B. refines grain size and produces less tendency to carburisation, improves corrosion and heat resistant properties
C. improves cutting ability and reduces hardenability
D. gives ductility, toughness, tensile strength and anticorrosion properties
E. raises its melting point - The correct composition of Babbit metal is__________________?
A. 87.75% Sn, 4% Cu, 8% Sb, 0.25% Bi
B. 90% Sn, 2% Cu, 4% Sb, 2% Bi, 2% Mg
C. 87% Sn, 4% Cu, 8% Sb, 1% Al
D. 82% Sn, 4% Cu, 8% Sb, 3% Al, 3% Mg
E. none of the above
