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Materials and Construction

Materials and Construction
A material capable of undergoing large permanent deformation, when subjected to tension is termed as

Brittle
Friable
None of these
Ductile

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Materials and Construction
Visco-elastic behaviour of materials which is time dependent is common in

Non-crystalline organic polymer
Crystalline solid
Non-crystalline solids
Plastics

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Materials and Construction
The damage/deterioration of metals by the __________ action of fluids is called 'erosion'.

Corrosive
Abrasive
Neither A nor B
Both A & B

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

Stainless steel
Kel-F and teflon
Graphite
Monel

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Materials and Construction
H₂SO₄ (< 50% concentration) is corrosive to

Copper, cast iron & high silicon iron (14% Si)
Rubber (butyl and hard), silicone rubber & teflon
Glass, graphite, porcelain & stoneware
Aluminium, mild steel, stainless steel, concrete & tin

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Materials and Construction
Generally __________ are subjected to galvanising (i.e., zinc coating).

Low carbon steels
Non-metals
Non-ferrous metals
Stainless steel

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