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Materials and Construction

Materials and Construction
Nitriding of steel is done (in electric furnace) at __________ °C.

1720
2210
910
510

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Materials and Construction
Which of the following is the softest material?

Flourite
Corrundum
Calcite
Quartz

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Materials and Construction
Age hardening is concerned with

Copper
Silver
Duralumin
Brass

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Materials and Construction
The fermentor used in the production of pencillin (by deep fermentation process) is made of

Procelain
Glass
Glass lined steel
High silicon cast iron

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Materials and Construction
In drop forging process, the forging is done by dropping the __________ at high velocity.

Weight on hammer
Hammer
Die with hammer
Workpiece

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Materials and Construction
Aluminium as a material of construction suffers from the disadvantage of

Rather low tensile strength
Very high cost
Scarce availability
Very low strength to weight ratio

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