MATERIALS AND CONSTRUCTION QUIZ

Which one occupies the lowermost position in the electromotive series of metals?

Zinc

Noble metals (Ag, Pt, Au)

Aluminium

Alkali metals (K, Na, Li)

TRUE ANSWER : ?
YOUR ANSWER : ?

Wrought iron is having very high

Susceptibility to changes in its properties by heat treatment

Strength

Corrosion resistance

Hardness

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Constantan is an alloy of

Fe (80%) & Ni (20%)

Cu (55%) & Ni (45%)

Pt (95%) & Rh (10%)

Cu (55%) & Sn (45%)

TRUE ANSWER : ?
YOUR ANSWER : ?

In the Kraft process of sulphate paper pulp manufacture, the black liquor and the white liquor storage tank is made of

Wood

Concrete

Porcelain

Steel

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Phenol is not shipped in

Nickel lined steel tank cars

Galvanised or tin lined drums

Boxed glass carboys

Cast iron containers

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YOUR ANSWER : ?

Bush bearings are made of

Mild steel

None of these

White metal alloys

Phosphorous bronze

TRUE ANSWER : ?
YOUR ANSWER : ?

Cast iron compared to steel is better in

Fluidity & castability

Malleability

Strength

Ductility

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Which of the following undergoes granular fracture?

Cast iron

Steel

None of these

Wrought iron

TRUE ANSWER : ?
YOUR ANSWER : ?

The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability?

Wrought iron

Copper

Aluminium

Lead

TRUE ANSWER : ?
YOUR ANSWER : ?

Bog iron used for the adsorption of H?S from coke oven gas is

None of these

Carbon free iron

An intimate mixture of saw dust and iron dust (i.e. moist ferric hydroxide)

Iron impregnated with resin (usually bakelite)

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YOUR ANSWER : ?

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