MATERIALS AND CONSTRUCTION QUIZ

'Hypersil' is a __________ steel.

Tungsten

Molybdenum

High speed

Silicon

TRUE ANSWER : ?
YOUR ANSWER : ?

Gas holder of a gobar (cowdung) gas plant is made of

Aluminium

Tin

Molybdenum stainless steel

Mild steel

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ steel is widely used for the manufacture of motor car crankshafts.

Chrome

Nickel

Silicon

High speed

TRUE ANSWER : ?
YOUR ANSWER : ?

As the impurities are oxidised, the melting point of iron

Remains unchanged

Decreases

May increase or decrease ; unpredictable

Increases

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ does not contain copper as an alloying element,

Manganin

Monel metal

Nichrome

Perminivar

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following exercises most powerful influence on the mechanical properties of steel?

Phosphorous

Silicon

Manganese

Carbon

TRUE ANSWER : ?
YOUR ANSWER : ?

Ability of a material to absorb energy in deformation in the plastic range is characterised as its

Toughness

Creep

Ductility

Resilience

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ possesses viscoelastic properties.

Glass

Cork

Rubber

Graphite

TRUE ANSWER : ?
YOUR ANSWER : ?

The purpose of nitriding the steel is to

None of these

Improve its reliability

Soften its surface

Harden its surface

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following heat treatment processes is used for softening the hardened material?

Annealing

None of these

Tempering

Normalising

TRUE ANSWER : ?
YOUR ANSWER : ?

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