MATERIALS AND CONSTRUCTION QUIZ

Which of the following is the hardest material?

Corrundum

Quartz

Topaz

Flourite

TRUE ANSWER : ?
YOUR ANSWER : ?

Anodic material used for the cathodic protection of underground buried steel pipeline is

Brass

Nickel or copper

Bronze

Zinc or magnesium

TRUE ANSWER : ?
YOUR ANSWER : ?

The high expansion metal normally used in the bimetallic thermometer is __________ temperature measurement.

Both A & B

Brass for low

Aluminium for all

Nickel alloys for high

TRUE ANSWER : ?
YOUR ANSWER : ?

Iron rust is

Hydrated ferric oxide

Ferrous oxide

Powdered iron

Ferric sulphide

TRUE ANSWER : ?
YOUR ANSWER : ?

Molybdenum steels containing 0.15 to 0.40% molybdenum

Have very poor fatigue resistance

Are prone to temper brittleness

Are used for automobile parts like gears, axle, shaft, bearings etc

Do not contain nickel or chromium or both

TRUE ANSWER : ?
YOUR ANSWER : ?

Cast iron compared to steel is better in

Fluidity & castability

Strength

Ductility

Malleability

TRUE ANSWER : ?
YOUR ANSWER : ?

The increase in hardness of metal due to its cold working is termed as the __________ hardening.

Flame

Age

Induction

Work

TRUE ANSWER : ?
YOUR ANSWER : ?

Light weight metallic alloy used in aircraft industry is

High silicon (14%) iron

Aluminium

Duralumin

Phosphor bronze

TRUE ANSWER : ?
YOUR ANSWER : ?

An elastic behaviour of materials is expressed in terms of

Hysterisis loop area

None of these

Stress-strain curve

Relaxation time

TRUE ANSWER : ?
YOUR ANSWER : ?

Corrosion resistance of steel is increased by the addition of

Nickel and chromium

Molybdenum and tungsten

Phosphorous and tungsten

Lead and vanadium

TRUE ANSWER : ?
YOUR ANSWER : ?

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