MATERIALS AND CONSTRUCTION QUIZ

Aluminium alloy is one of the most suitable materials of construction for aircrafts mainly due to its

Low temperature strength properties

High strength and corrosion & oxidation-resistance at elevated temperature

Its ability to be cast, rolled, forged & stamped

High strength to weight ratio

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

Fractured without deformation

Drawn into wires

Hammered to a thin sheet

Made lustrous by heating it

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Glass lined vessels are not used for handling

Dilute HCI

Dilute HNO₃

Hydroflouric acid

Dilute HNO₃

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The specific gravity of coal depends mainly on its __________ content.

Volatile matter

Ash

Carbon

Moisture

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Dip stick used for measuring the level of petro fuels (e.g. petrol, diesel, fuel oil etc.) in the storage tank is usually made of

Copper

Aluminium

High carbon steel

Brass

TRUE ANSWER : ?
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Gas holder of a gobar (cowdung) gas plant is made of

Mild steel

Aluminium

Molybdenum stainless steel

Tin

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Carbon tetrachloride can be stored in a storage vessel made of

Tin

Stainless steel

All of these

High silicon iron (14% Si)

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Wood metal is not used for making

Soft solder

Storage tank for storing brine and caustic soda

Fusible safety plug for pressure cooker

Casting for dental work

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Tin base and lead base alloys are used for bearing materials. Tin compared to lead has lower

Thermal conductivity

Corrosion resistance

Abundant availability

Price

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The purpose of nitriding the steel is to

Soften its surface

None of these

Improve its reliability

Harden its surface

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