Sodium silicate in sand in often used as
A) binder
B) permeability promotion agent
C) substitute of clay
D) refractory material
Correct Answer:
Verified
Q15: Gold melts at
A)1063°C
B)3300°C
C)1444°C
D)2100°C
Q16: Which wood is difficult to machine?
A)Kiln dried
Q17: Coke used in cupola is in the
Q18: The amount of coal dust added to
Q19: Which of the following statement is correct?
A)Less
Q20: Skeleton patterns are generally used for
A)hollow castings
B)small
Q22: Which of the following defect may occur
Q23: Pit furnace can be used for the
Q24: Shell moulding is a process in which
A)a
Q25: Die casting dies are generally made of
A)aluminium
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