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Materials and Construction

Materials and Construction
Evaporators used in caustic soda recovery and production plant are made of

Gun metal
Babbit metal
Wood metal
Monel metal

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Materials and Construction
Which of the following is not an alloy of tin?

Pewter type metal
German silver
Soft solder
White-bearing metal

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Materials and Construction
Which of the following is the most suitable material of construction for evaporator & its tubes for concentrating NaOH solution to 70%?

Karbate
Cast iron
Steel
Nickel

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Materials and Construction
An alloy used as thermocouple material comprises of 40% nickel and 60% copper.

Constantan
Chromel
German silver
Kanthal

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Materials and Construction
The main purpose of galvanising iron sheets is to

Harden the surface
Prevent the action of water
Prevent the action of oxygen
Increase its glossiness and lustre

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Materials and Construction
The behaviour of visco-elastic material is time dependent. This behaviour is commo in __________ materials.

Non-crystalline organic polymeric
Rubberry
Non-crystalline solid
Crystalline

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