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Chemical Engineering Basics

Chemical Engineering Basics
Carbon is present in the form of __________ in grey cast iron.

Cementite
Spheroids
Nodular aggregates of graphite
Flakes

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Chemical Engineering Basics
The ratio of coil diameter to wire diameter of a spring is called the spring

None of these
Deflection
Index
Form co-efficient

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Chemical Engineering Basics
Principal alloying elements of cast tool alloys which have very high wear resistance & high temperature strength are

Molybdenun, tungsten & chromium
Cobalt, chromium & nickel
Cobalt, chromium & tungsten
Cobalt, zirconium & molybdenum

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Chemical Engineering Basics
Protection of ship hulls against sea water corrosion is done by coating with zinc because of the fact that zinc compared to iron is

Oxidised preferentially
Reduced preferentially
Cheaper
Lighter

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Chemical Engineering Basics
The property of material, by which a given amount of energy is absorbed by it, without plastic deformation is called

Toughness
Resilience
Impact strength
Ductility

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Chemical Engineering Basics
Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

It will be cavitated
It will not develop sufficient head to raise water
It will deliver low discharge of liquid
Its efficiency will not be affected

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