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Chemical Engineering Basics

Chemical Engineering Basics
1% concentration of water vapor in air is equivalent to __________ ppm (parts per million).

10
100
1000
10000

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Chemical Engineering Basics
There are one octahedral void and __________ tetrahedral void in the closest packing of atoms.

Three
Two
None of these
One

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Chemical Engineering Basics
Transition from laminar flow to turbulent flow in fluid flow through a pipe does not depend upon the

Diameter of the pipe
Length of the pipe
Density of the fluid
Velocity of the fluid

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Chemical Engineering Basics
Capacity & power requirement for an air compressor working at high altitude compared to sea-level will be

Less
More
Either more or less; depends on the climatic conditions
Same

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Chemical Engineering Basics
The velocity at which individual particles from a fluidised bed are carried away by the fluid passing through it, is defined as the

Minimum fluidisation velocity
Elutriation velocity
Superficial velocity
Terminal velocity

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Chemical Engineering Basics
Free oxygen is removed from boiler feed water, because it

Causes explosion
Reduces heat transfer co-efficient
Is corrosive
None of these

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