7000+ Extractive Metallurgy MCQ Questions and Answers - 2

Question: 6

Which in its purest form contains maximum percentage of lead?

(A) Anglesite

(B) Cerussite

(C) Cassiterite

(D) Galena

Question: 7

Carnellite is an ore of

(A) Magnesium

(B) Beryllium

(C) Tungsten

(D) Nickel

Question: 8

Bessemerisation is involved in the extraction of

(A) Aluminium

(B) Copper

(C) Iron

(D) Silver

Question: 9

Heating an ore in the absence of air below its melting point is called

(A) Smelting

(B) Roasting

(C) Leaching

(D) Calcination

Question: 10

Of all the commercial metals, which is the most plentiful?

(A) Aluminium

(B) Copper

(C) Iron

(D) Lead