The transistor is made of___________________? A. silver B. gold C. copperD. germanium E. german silver

Pearlite is a combination of___________________? A. ferrite and cementite B. cementite and gamma iron C. ferrite and austenite D. ferrite and iron graphite E. pearlite and ferrite

Lead is poured into the joint between two pipes. These pipes may be made of____________________? A. cast iron B. vitrified clay C. asbestos cement D. concrete E. mild steel

Austenite rs a combination of_________________? A. ferrite and cementiteB. cementite and gamma iron C. ferrite and austenite D. ferrite and iron graphite E. pearlite and ferrite

Recrystallisation temperature can belowered by_________________? A. purification of metal B. grain refinement C. working at lower temperatureD. all of the above E. none of the above

Basic solution is one which has pH value___________________? A. greater than 7 B. equal to 7 C. less than 7 D. pH value has nothing to do with basic solution E. none of the above

Neutral solution is one which has pH value__________________? A. greater than 7 B. less than 7C. equal to 7 D. pH value has nothing to do with neutral solution E. none of the above

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%…

Aluminium bronze contains__________________? A. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe B. 92.5% aluminium, 4% copper, 2% nickel, and 1.5% MgC. 10% aluminium and 90% copper D. 90% magnesium and 9% aluminium with some copper E.…

Foundry crucible is made of_________________? A. mild steel B. german silver C. lead D. cast ironE. graphite