7000+ Physical Metallurgy Multiple Choice Questions - 2

Question: 6

Materials with metallic bonds in atoms are necessarily

(A) Having low electrical conductivity

(B) Gases at room temperature

(C) Hard

(D) Ductile under stress

Question: 7

Which of the following is not a metal heat treatment process?

(A) Calorising

(B) Quench hardening

(C) Austempering

(D) Marageing

Question: 8

High temperature tempering

(A) Developes a troostite structure

(B) Is used for components like connecting rods, charts, gears etc

(C) Develops a martensite structure

(D) Imparts high ductility without reducing hardness

Question: 9

Which one of the following can avoid weld decay of austenitic stainless steels?

(A) Decreasing chromium content

(B) Increasing carbon content

(C) Eliminating strong carbide formers

(D) Reducing carbon content

Question: 10

Tungsten in steel

(A) Increases strength at elevated temperature

(B) Increases corrosion resistance

(C) Decreases red hardnesss

(D) Promotes coarse grain