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Chemical Engineering Basics

Chemical Engineering Basics
Nusselt number is related to the Reynolds number (Re) in turbulent & laminar flow respectively as

Re0.8, Re0.5
Re0.5, Re0.8
Re-0.8, Re0.5
Re0.8, Re-0.5

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Chemical Engineering Basics
The most important consideration, while designing the refrigeration system of an aircraft is that the refrigeration system

Is as light as possible
Consumer minimum horse power
Employs minimum quantity of refrigerant
Has very high C.O.P

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Chemical Engineering Basics
__________ test can be termed as the semi-distructive test.

Charpy
Torsion
Hardness
Impact

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Chemical Engineering Basics
Milligram of KOH required to saponify 1 gm of oil is called its __________ number.

Saponification
Precipitation
Emulsion
Acid

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Chemical Engineering Basics
With increase in steam pressure, its specific volume decreases

Slowly first and then rapidly
Rapidly first and then slowly
Exponentially
Linearly

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Chemical Engineering Basics
In a casting, cold shut defect is caused by

Low pounhg temperature
Melt-mould reactions
Faulty gating system
Very low mould permeability

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