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Materials and Construction

Materials and Construction
Which of the following would not be a suitable material of construction for handling aqueous hydrofluoric acid (HF) at 100°C ?

Graphite
Kel-F and teflon
Monel
Stainless steel

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Materials and Construction
Galvanised iron is

None of these
Harder
Alumina coated iron
Protected from rusting

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Materials and Construction
Vycor, a widely used material for making 'thermal wells' in temperature measurement, is a

Glass
Thermosetting plastic
Cermet
Metallic alloy

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Materials and Construction
Which of the following is a low melting point metal?

Copper
Stainless steel
Tin
Wrought iron

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Materials and Construction
Molybdenum steels containing 0.15 to 0.40% molybdenum

Have very poor fatigue resistance
Do not contain nickel or chromium or both
Are used for automobile parts like gears, axle, shaft, bearings etc
Are prone to temper brittleness

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

Carbon
Manganese
Phosphorous
Silicon

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