Category: Engineering Materials

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. cast iron
B. pig iron
C. wrought iron
D. malleable iron
E. white iron

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. tin, lead and small percentage of antimony
B. tin and lead
C. tin, lead and silver
D. tin and copper
E. tin, copper and lead

A. in which parts are not loaded
B. in which stress remains constant on in-creasing load
C. in which deformation tends to loosen the joint and produces a stress reduced
D. stress reduces on increasing load
E. none of the above

A. purification of metal
B. grain refinement
C. working at lower temperature
D. all of the above
E. none of the above

A. electroplating
B. cyaniding
C. induction hardening
D. nitriding
E. flame hardening

A. %age of carbon
B. %age of alloying elements
C. heat treatment employed
D. method of manufacture
E. shape of carbides and their distribution in iron

A. 94% aluminium, 4% copper and 0.5% Mn, Mg, Si and Fe
B. 92.5% aluminium, 40% copper, 2% nickel, and 1.5% Mg
C. 10% aluminium and 90% copper
D. 90% magnesium and 9% aluminium with some copper
E. 94% aluminium and 6% tin

A. sulphur, lead, phosphorous
B. silicon, aluminium, titanium
C. vanadium, aluminium
D. chromium, nickel
E. lubricants