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Chemical Engineering Basics

Chemical Engineering Basics
__________ is the most suitable lubricant for drawing mild steel wires?

Lime water
Kerosene
Sodium stearate
Water

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Chemical Engineering Basics
A jig is used while __________ a hole.

Drilling
Boring
Counter boring
Enlarging

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Chemical Engineering Basics
Which of the following metals is the most prone to work hardening?

Lead
Aluminium
Copper
Brass

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

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

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

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

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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

Elutriation velocity
Terminal velocity
Minimum fluidisation velocity
Superficial velocity

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