A. greater than 7
B. less than 7
C. equal to 7
D. pH value has nothing to do with neutral solution
E. none of the above
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
A. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
B. 92.5% aluminium, 4% copper, 2% nickel, and 1.5% Mg
C. 10% aluminium and 90% copper
D. 90% magnesium and 9% aluminium with some copper
E. 10% aluminium and 90% tin
A. mild steel
B. german silver
C. lead
D. cast iron
E. graphite
A. magnesium alloys
B. titanium alloys
C. chromium alloys
D. magnetic steel alloys
E. none of the above
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. silver and chromium
E. malleable cast iron and silver
A. improvement of casting characteristics
B. improvement of corrosion resistance
C. one of the best known age and precipitation-hardening systems
D. improving machinability
E. none of the above
A. delta metal
B. monel metal
C. constantan
D. nichrome
E. silicon bronze
A. improvement of casting characteristics
B. improvement of corrosion resistance
C. one of the best known age and precipitation-hardening systems
D. improving machinability
E. none of the above
A. modulus of elasticity is fairly low
B. wear resistance is very good
C. fatigue strength is not high
D. creep strength limits its use to fairly low temperatures
E. corrosion resistance is good