1000+ Foundry Technology Interview Questions and Answers - 2

Question: 6

Which inoculant is used to produced ductile iron?

(A) fluorides

(B) graphite

(C) carbon

(D) magnesium

Question: 7

Refractories should have all the following properties except

(A) heat insulation

(B) long life

(C) high electrical conductivity

(D) minimum contraction and expansion due to temperature variations

Question: 8

Which variety of cast iron can be forged?

(A) wrought iron

(B) grey cast iron

(C) high silicon cast iron

(D) all of the above

Question: 9

The rammer used for packing the sand in pockets/corners of a mould is known as

(A) hand rammer

(B) floor rammer

(C) peen rammer

(D) none of the above

Question: 10

There is no need for the withdrawal of pattern from the mould in case of

(A) consumable patterns

(B) patterns with core

(C) hollow patterns

(D) wax patterns