MATERIALS AND CONSTRUCTION QUIZ

Which of the following has the poorest wel-dability?

High-carbon steel

Mild steel

Low carbon steel

Wrought iron

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ iron is produced, when molten pig iron is allowed to cool gradually.

Wrought

None of these

Grey cast

White cast

TRUE ANSWER : ?
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Biological shield in a nuclear power reactor is made of

Steel

Cadmium

Concrete

Zircalloy

TRUE ANSWER : ?
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A chemical change takes place when iron

None of these

Melts

Is heated

Rusts

TRUE ANSWER : ?
YOUR ANSWER : ?

Addition of 2% nickel in steel makes it suitable for making

Electronic valves

Connecting rod

Boiler plates, rivets etc

Turbine blades

TRUE ANSWER : ?
YOUR ANSWER : ?

Cementite is

All of these

Fe₃C chemically

Characterised by an orthorhombic crystal structure

A compound of carbon and iron

TRUE ANSWER : ?
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Gunmetal and bronze are not corroded by the action of

Synthetic detergent solution

Hydrochloric acid (10%)

Wet chlorine

Nitric acid (< 25%)

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is not a non-ferrous alloy?

Muntz metal

Magnalium

Gun metal

Meehanite

TRUE ANSWER : ?
YOUR ANSWER : ?

Which has the maximum melting point out of the following?

Cast iron

Wrought iron

Stainless steel

Steel

TRUE ANSWER : ?
YOUR ANSWER : ?

Cast iron is

Having compressive strength more than its tensile strength

Used for making shock resisting parts

All of these

Manufactured in cupola and is brittle

TRUE ANSWER : ?
YOUR ANSWER : ?

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