Hardened steel is softened by___________________?
Hardened steel is softened by___________________?
A. Normalising
B. Tempering
C. Annealing
D. Carburising
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Karbate is____________________?
Karbate is____________________?A. A mixture of iron dust and saw dust
B. Carbon impregnated with resin (usually Bakelite)
C. An acid resistant material
D. Both B. and C.Lead is_____________________?
Lead is_____________________?A. Not resistant to corrosion
B. Used as a cathodic material
C. Not used as pigment (in its compound forms) for paints
D. Used as a shock absorber (in mattress form) between the foundation and steel framework of
skyscraper buildingsWhich of the following is a light alloy ?
Which of the following is a light alloy ?A. Monel metal
B. Dow metal
C. German silver
D. Babbitt metalAddition of tungsten to steel imparts___________________?
Addition of tungsten to steel imparts___________________?A. Magnetic properties
B. Cutting hardness
C. Corrosion resistance
D. DuctilityHardest materials so far found is_________________?
Hardest materials so far found is_________________?A. Diamond
B. Graphite
C. Carborundum
D. Pumice stoneWhich of the following is not an alloy of copper ?
Which of the following is not an alloy of copper ?A. Muntz metal
B. Admiralty gun metal
C. German silver
D. Pewter metal