A. Wood’s metal
B. Babbitt metal
C. Monel metal
D. Duralumin
Related Mcqs:
- Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process ?
A. Galvanising
B. Tinning
C. Sherardizing
D. None of these - Melting point & boiling points of liquid oxygen are respectively – 218.8°C & – 183°C, while the same for liquid nitrogen is – 210°C & – 195.8°C respectively. The difference in melting points of liquid oxygen & liquid nitrogen is not equal to 8.8 ?
A. °C
B. °F
C. °K
D. °R - Consider an ideal solution of components A and B. The entropy of mixing per mole of an alloy containing 50% B is_______________?
A. R ln 2
B. -R ln 2
C. 3 R ln 2
D. -3R ln 2 - Steel containing low percentage of nickel, chromium & tungsten are termed as the _____________ steel ?
A. Wrought
B. Tool
C. Alloy
D. Plain carbon - Which of the following does not have a sharp melting point ?
A. Thoria
B. Glass
C. Ice
D. Pig iron - Change in volume of metals from absolute zero temperature to their melting points is___________________?
A. Almost same for all metals
B. Different for different metals
C. Less for low melting point metals
D. Less for high melting point metals - While the recrystallisation temperature for pure metals is 0.3 Tm, the same for alloys is equal to ______________ × Tm (where, Tm Melting temperature) ?
A. 0.25
B. 0.45
C. 0.70
D. 0.95 - The atmospheric temperature during melting of ice/snow (in the atmosphere)_________________?
A. Decreases
B. Increases
C. Remain same
D. May increase or decrease; depends on the altitude where snow melts - Alloy powder manufactured by the following process have spherical shapes ?
A. Electrochemical deposition
B. Gaseous reduction
C. Atomisation
D. Mechanical attrition - ____________________ of hard alloy and tool steel is done to make it easily machinable ?
A. Case carburising
B. Tempering
C. Normalising
D. Annealing
