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Materials and Construction

Materials and Construction
Corrosion resisting properties of cast iron are significantly improved by the addition of 12 - 15% of

Vanadium
Silicon
All of these
Tungsten

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Materials and Construction
Cold work tool steel should have

High wear resistance
All of these
High toughness
Poor hardenability

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Materials and Construction
Chilled iron castings are

Highly wear resistant
Easily machinable
None of these
Soft on surface

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Materials and Construction
Molybdenum steels containing 0.15 to 0.40% molybdenum

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

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Materials and Construction
Chlorination of benzene is done to produce benzene hexachloride (a pesticide) in a photochemical reactor lined with

Lead or glass
Fireclay bricks
PVC
Karbate

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Materials and Construction
__________ is not a case hardening process.

Cyaniding
Carburising
Annealing
Nitriding

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