A. gamma iron (910° to 1400°C), Cu, Ag, Au, Al, Ni, Pb, Pt
B. Mg, Zn, Ti, Zr, Br, Cd
C. a iron (below 910°C and between 1400 to 1539°C), W
D. all of the above
E. none of the above
Related Mcqs:
- If 850 kg liquid occupies volume of one cubic meter, men 0.85 represents its__________________?
A. specific weight
B. specific mass
C. specific gravity
D. specific density
E. none of the above - Which of the following elements does not impart hardness to steel__________________?
A. copper
B. chromium
C. nickel
D. silicon
E. none of the above - The alloy used for making electrical resistances and heating elements is____________________?
A. nichrome
B. invar
C. magnin
D. elinvar
E. peiminvar - To reduce the possibility of knock in the C.I. engines, the first elements of fuel and air should have_______________?
A. high temperature
B. high density
C. short delay
D. reactive mixture
E. all of the above - Which of the following element results in presence of free graphite in C.I_________________?
A. carbon
B. sulphur
C. silicon
D. manganese
E. phosphorous - Cupola produces following material__________________?
A. cast iron
B. pig iron
C. wrought iron
D. malleable iron
E. white iron - Which one of the following metals would work-harden more quickly than the others__________________?
A. copper
B. brass
C. lead
D. silver
E. aluminium - Which of the following is used for bearing liner_______________?
A. gun metal
B. bronze
C. bell metal
D. babbit metal
E. brass - Structural steel contains following principal alloying elements__________________?
A. nickel, chromium and manganese
B. tungsten, molybdenum and phosphorous
C. lead, tin, aluminium
D. zinc, sulphur, and chromium
E. none of the above - Which of the following has highest specific strength of all structural materials__________________?
A. magnesium alloys
B. titanium alloys
C. chromium alloys
D. magnetic steel alloys
E. none of the above
