Related Questions

Oxide layer formed on the non-ferrous metal surface after its annealing is
A Removed by acid pickling
B Hammered into the surface
C Removed with coarse emery cloth
D Left as such to protect the surface
Non-ferrous alloys used for making cutting tools need not have high
A Abrasion resistance
B Toughness
C Red hardness
D Cutting speed
Transformation range for ferrous material is the temperature interval during which __________ is formed during its heating.
A Cementite
B Austenite
C Martensite
D Pearlite
Ferrous sulphate is used in water treatment as a/an
A Oxidizing agent
B Reducing agent
C Coagulant aid
D Adsorbent
__________ furnace is generally used in the non-ferrous foundaries.
A Direct arc
B Indirect arc
C Resistance
D Induction
The forms in which various metals and non metals occur in nature are called minerals. Which of the following is not a metallic ferrous mineral?
A Cassiterite
B Sphalerite
C Chalcopyrite
D Calcite
Which of the following is not a non-ferrous alloy?
A Meehanite
B Magnalium
C Gun metal
D Muntz metal
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
A cubical block of metal weighs 6 pounds. How much will another cube of the same metal weigh if its sides are twice as long?
A 48
B 32
C 24
D 18

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