Metallurgy Physics of Metals MCQ Questions and Answers - 2

Question: 6

Schottky and Frankel imperfections are _____ crystals.

(A) Grain boundaries in covalent

(B) Vacancies in covalent

(C) Dislocation in ionic

(D) Vacancies in ionic

Question: 7

Energy of an electron is given by the

(A) De-Broglie equation

(B) Heisenberg's principle

(C) Theory of relativity

(D) Sommerfield theory

Question: 8

Which of the following is not an amorphous material?

(A) Carbon

(B) Rubbers

(C) Plastics

(D) Glass

Question: 9

Which of the following has the most stable atomic structure?

(A) Alkali metals

(B) Rare gases

(C) Rare earth metals

(D) Transition elements

Question: 10

Metals with high cohesive forces have high

(A) Melting point

(B) Elastic constant

(C) Mechanical strength

(D) All a, b and c