7000+ Foundry Metallurgy MCQ Questions and Answers - 1

Question: 1

The coefficient of thermal expansion of refractory material should be

(A) medium

(B) low

(C) high

(D) very high

Question: 2

The shell of a shell moulding process is made from a mixture of sand and

(A) dextrir

(B) resin

(C) oil

(D) water

Question: 3

Moulding sand comprises of sand, moisture and

(A) degrassing agent

(B) exothermic powder

(C) sea coal

(D) clay

Question: 4

Rotary kilns meant for calcinations of limestone are lined with chrome magnesite bricks in the ____ zone.

(A) burning

(B) preheating

(C) cooling

(D) all

Question: 5

The purpose of inoculation is to _____ of the cast metal.

(A) modify the structure and properties

(B) improve the finishing

(C) alter the chemical composition

(D) decrease the melting temperature