Related Questions

Non-ferrous metals and hard steels do not exhibit a definite yield point, when pulled in the testing machine and hence for these cases, a better measure of their elastic properties is defined by the __________ stress.
A Ultimate
B Yield point
C Proof
D None of these
Carborundum used for making crucibles for melting non-ferrous metals is chemically
A Silicon carbide
B Silicon nitride
C Crystalline magnesia
D Zirconium sulphate
Which of the following is a non-metallic mineral?
A Bauxite
B Magnesium
C Gypsum
D Manganese
Which one of the following is a non-metallic mineral?
A Silver
B Sulphur
C Platinum
D Iron
Which of the following metals occurs in nature in their free metallic state?
A Au & Ag
B Pb & Zn
C Cu & Ni
D None of these
The metallic minerals are
A Asbestos, mica, graphite
B Iron ore, copper, lead
C Coal, oil, natural gas
D Salt, potash, sulphur
Which of the following is not a non-ferrous alloy?
A Meehanite
B Magnalium
C Gun metal
D Muntz metal
Non-ferrous alloys used for making cutting tools need not have high
A Abrasion resistance
B Toughness
C Red hardness
D Cutting speed
Which of the following metals forms an amalgam with other metals?
A Tin
B Mercury
C Lead
D Zinc
__________ furnace is generally used in the non-ferrous foundaries.
A Direct arc
B Indirect arc
C Resistance
D Induction

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