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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

Rubber
Glass
Monel
Nickel

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Materials and Construction
Hastelloy comprises of

Lead and tin
Copper and tin
Copper and nickel
Molybdenum and nickel

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Materials and Construction
Molybdenum steels containing 0.15 to 0.40% molybdenum

Do not contain nickel or chromium or both
Have very poor fatigue resistance
Are prone to temper brittleness
Are used for automobile parts like gears, axle, shaft, bearings etc

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Materials and Construction
With increase in carbide/graphite ratio in cast iron, its

Both A & B
Hardness & brittleness increases
Ductility decreases
Neither A nor B

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Materials and Construction
Centrifugal pump made of pyrex or glass can't be used to pump

Alkaline solutions
Brine
Dilute H₂SO₄ at room temperature
Milk and fruit juices

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Materials and Construction
Which of the following is a light alloy?

Babbit metal
Monel metal
German silver
Dow metal

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