1000+ Metallurgy Objective Questions and Answers Pdf - 2

Question: 6

Which of the following is a noble metal?

(A) platinum

(B) nickel

(C) stainless steel

(D) aluminium

Question: 7

Which of the following is closest to the purest form of iron

(A) grey cast iron

(B) pig iron

(C) mild steel

(D) wrought iron

Question: 8

The process of providing zinc coating on steel pipes is known as

(A) galvanizing

(B) cold working

(C) spheroidising

(D) pickling

Question: 9

Heating elements of electrical heaters are made of

(A) tungsten

(B) invar

(C) nicheloy

(D) nichrome

Question: 10

Which of the following is the softest material?

(A) calcite

(B) corundum

(C) diamond

(D) quartz