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Materials and Construction

Materials and Construction
Fermenter used in the production of pen-cillin by deep fermentation proces is a __________ lined steel vessel

Monel
Nickel
Rubber
Glass

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Materials and Construction
High speed cutting tool steels contain about __________ percent of tungsten.

18-20
30-35
50-55
43990

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Materials and Construction
Which of the following finds the least commercial use?

High silicon iron
Low carbon steel
Pure iron
High carbon steel

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Materials and Construction
Addition of nickel to copper improves its

Hardness
Machinability
Strength
Ductility

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Materials and Construction
Bronze is an alloy of copper and

Tin
Lead
Nickel
Zinc

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Materials and Construction
The electrical conductivity of a __________ decreases with rise in temperature.

Metal/alloy
None of these
Semi-conductor
Dielectric

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