A.cast iron is in the form of broken pieces
B.cast iron requires higher temperature for heating
C.the rate of heating required for melting cast iron connot be provided by electric furnaces
D.It is expensive to use electricity for melting of cast iron
A.liquid stage
B.mushy stage
C.plastic stage
D.solid stage
A.hardness
B.corrosion resistance
C.tensile strength
D.all of the above
A.Tapered upwards
B.Tapered downwards
C.Has no taper at all
A.separates out impurities
B.prevents burning of magnesium alloys
C.facilitates production of sound cstings
D.all of the above
A.cast iron
B.aluminium alloys
C.alloy steels
D.bronze
A.0.1 percent
B.1 percent
C.4 percent
D.14 percent
A.Tungsten
B.Nickel
C.Steel
D.cast iron
A.mass production of small castings
B.production of castings which do not require machining
C.castings having several hollow spaces
D.castings for light metals
A.1 mm/metre
B.5 mm/metre
C.14 mm/metre
D.25 mm/metre
