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Materials and Construction

Materials and Construction
Urea autoclave is made of

Cast iron
Stainless steel
Lead lined steel
Refractory blocks

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Materials and Construction
Which of the following heat treatment processes is used for softening the hardened material?

Tempering
None of these
Annealing
Normalising

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Materials and Construction
Cermets are used for making

Cutting tools
Neither A nor B
Abrasives
Both A & B

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Materials and Construction
The melleability of a material is the property by virtue of which it can be rolled or hammered into thin sheets. Which of the following materials has the miximum malleability?

Wrought iron
Aluminium
Copper
Lead

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Materials and Construction
Silico-manganese steels (containing 0.7% Mn, 0.5% C and 2% Si)

Do not have good resilience properties
Are used for leaf and coiled springs
Do not require heat treatment for any of its applications
Is tempered at 850°C

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Materials and Construction
Babbit metal is not a

Tin base alloy
White metal
Lead base alloy
Pure metal

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