7000+ GATE Metallurgy Question Paper with Solution Pdf - 1

Question: 1

Which is an acidic refractory?

(A) Chrome magnesite

(B) Fireclay

(C) Dolomite

(D) Magnesite

Question: 2

Chromite refractories are

(A) Acidic refractory

(B) Basic refractory

(C) Neutral refractory

(D) Fired at 600°C only

Question: 3

Fusion point of a basic refractory material is

(A) Always less than 1000°C

(B) Not affected by the addition of acid oxides

(C) Increased by the addition of acid oxides

(D) Reduced by the addition of acid oxides

Question: 4

Alumina is a _____ type of refractory.

(A) Acidic

(B) Basic

(C) Neutral

(D) None of these

Question: 5

Chrome magnesite brick is not used for lining the

(A) Coke oven regenerator

(B) Hearth of soaking pits

(C) Burning zone of limestone rotary kilns

(D) Bottom hearth of reheating furnace