MATERIALS AND CONSTRUCTION QUIZ

A material is called 'ductile', if it can be

Made lustrous by heating it

Fractured without deformation

Drawn into wires

Hammered to a thin sheet

TRUE ANSWER : ?
YOUR ANSWER : ?

Post weld heat treatment is done by

Tempering

Solution annealing

Stress relieving

Normalising

TRUE ANSWER : ?
YOUR ANSWER : ?

Which one has the maximum tensile strength out of the following?

Grey cast iron

Pig iron

White cast iron

Nodular cast iron

TRUE ANSWER : ?
YOUR ANSWER : ?

The electrical conductivity of a __________ decreases with rise in temperature.

Metal/alloy

Semi-conductor

None of these

Dielectric

TRUE ANSWER : ?
YOUR ANSWER : ?

The fermentor used in the production of pencillin (by deep fermentation process) is made of

High silicon cast iron

Glass lined steel

Glass

Procelain

TRUE ANSWER : ?
YOUR ANSWER : ?

Carbon percentage is the same in cast iron and

Pig iron

High silicon (14%) iron

Wrought iron

Mild steel

TRUE ANSWER : ?
YOUR ANSWER : ?

Addition of tungsten to steel imparts

Corrosion resistance

Cutting hardness

Ductility

Magnetic properties

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following commercial metals is most abundantly found in India?

Copper

Zinc

Nickel

Aluminium

TRUE ANSWER : ?
YOUR ANSWER : ?

Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)

Do not have good resilience properties

Do not require heat treatment for any of its applications

Is tempered at 850°C

Are used for leaf and coiled springs

TRUE ANSWER : ?
YOUR ANSWER : ?

Beehive coke ovens are made of __________ bricks.

Silica

Corundum

Silicon carbide

Fireclay

TRUE ANSWER : ?
YOUR ANSWER : ?

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