Engineering Materials MCQ Question with Answer

Engineering Materials MCQ with detailed explanation for interview, entrance and competitive exams. Explanation are given for understanding.

Question No : 15
Cast iron has

High tensile strength

Its elastic limit close to the ultimate breaking strength

High ductility

All of the above

Question No : 16
Age-hardening is related with

Stainless steel

Gun metal

German silver

Duralumin

Question No : 17
For the allotropic forms of iron, the points of arrest are

The points where no further change occurs

Constant for all metals

The points where there is no further flow of metal

The points of discontinuity

Question No : 18
The ultimate tensile strength and yield strength of most of the metals, when temperature falls from 0 to 100°C will

Increase

Decrease

Remain same

First increase and then decrease

Question No : 19
Hardness of lower bainite (tempered martensite) is about

RC 65

RC 48

RC 57

RC 80

Question No : 20
Monel metal is an alloy of

Nickel and copper

Nickel and chromium

Nickel, Chromium and iron

Copper and chromium

Question No : 21
Cupola produces following material

Cast iron

Pig iron

Wrought iron

Malleable iron