7000+ Extractive Metallurgy Objective Questions for GATE, SAIL Exam - 2

Question: 6

Tin is present in the slag mostly as

(A) Chloride

(B) Oxide

(C) Sulphide

(D) Silicate

Question: 7

Extraction of which of the following metals is the most expensive?

(A) Au

(B) Fe

(C) Zn

(D) Pb

Question: 8

Electrometallurgical method is widely employed for the extraction of

(A) Al and Mg

(B) Pb

(C) Fe

(D) Zn

Question: 9

Copper, lead and zinc ores mostly occur in the form of

(A) Sulphides

(B) Sillicates

(C) Oxides

(D) Carbonates

Question: 10

The main/maximum use of lead is in the

(A) Bearing material manufacture

(B) Paint manufacture

(C) Lining of chemical equipment

(D) Storage batteries manufacture