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Materials and Construction

Materials and Construction
Cast iron detachable joint is used in __________ pipes.

Steel
Cast iron
Asbestos cement
Reinforced cement concrete

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Materials and Construction
Purity of electrical grade aluminium should be ≥ __________ percent.

95
99.5
90
85

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Materials and Construction
Maximum consumption of copper is in

Electrical industry
Small scale industries
Industrial equipment manufacture
Utensil manufacture

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Materials and Construction
Presence of high phosphorous in cast iron increases its

Shrinkage
Melting point
Fluidity
Tensile strength

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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 ?

Monel
Graphite
Kel-F and teflon
Stainless steel

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Materials and Construction
The heat treatment process to which castings and the steel balls produced by cold heading are subjected is

Annealing
Tempering
None of these
Normalising

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