Materials and Construction MCQs

4

8

14

20

High carbon steel

Wrought iron

Mild steel

None of these

Easily machinable

Soft on surface

Highly wear resistant

None of these

Not resistant to corrosion

Used as a cathodic material

Not used as pigment (in its compound forms) for paints

Used as a shock absorber (in mattress form) between the foundation an steel framework of skyscrapper buildings

Silver nitrate

Silver halide

Calcium silicate

Metallic silver

The costliest of all the alloys of nickel

Not suitable for making kitchen utensils

Used for making steam valves and turbine blades as it resists steam attack at high temperature

Not used in cast and wrought forms

Monel

Hastealloy C

Inconel

Bronzes

Harden its surface

Soften its surface

Improve its reliability

None of these

Are exemplified by clay and mica

Are poor electrical conductors due to lack of free electrons

Never exhibit polymorphism

All of the above

Hardness & brittleness increases

Ductility decreases

Both A & B

Neither A nor B