1000+ Foundry Technology Objective Type Questions and Answers - 2

Question: 6

In furan moulding which of the following is used as a catalyst?

(A) phenol formaldehyde

(B) phosphoric acid

(C) potassium hydroxide

(D) ammonium hydroxide

Question: 7

Which of the following is a screen?

(A) slick

(B) shovel

(C) riddle

(D) reamer

Question: 8

Highest melting point metal is

(A) cast iron

(B) steel

(C) nickel

(D) tungsten

Question: 9

Carbon dioxide moulding is useful for

(A) heavy and thick walled sections

(B) very thin sections

(C) regular sections

(D) all of the above

Question: 10

Which of the following holes appear on the surface of the casting when it is machined?

(A) gas holes

(B) slag holes

(C) pin holes

(D) blow holes