A.Has its atoms distributed in random pattern
B.Exists in several crystal forms at different temperatures
C.Has a fixed structure under all conditions
D.Responds to heat tretment
E.Can be cast
A.Glass
B.Silver
C.Gold
D.Mica
E.Brass
A.?-rays
B.?-rays
C.?-rays
D.X-rays
E.None of the above
A.Too much shrinkage of materials at low temperatures
B.Uneven shrinkage of materials at low temperatures
C.Brittleness of material at low temperature
D.The region where Hooke’s law does not hold good
E.None of the above
A.Pure iron
B.4% silicon steel
C.Gram oriented Si-Fe
D.Iron carbide
A.10
B.30
C.100
D.300
E.600
A.P-type semi-conductor
B.N-type semi-conductor
C.Photo sensitive
D.An insulator
E.A ferite
A.Cast iron
B.Mild steel
C.Carbon steel
D.High carbon steel
E.Alloy steel
A.A flue gas discharged to atmosphere
B.Highly poisonous
C.Used as fuel in a blast furnace
D.A by-product of blast furnace
E.Used as a cooking gas
A.Moulding sand
B.Cores
C.Castings
D.Pattern
E.Welded components
