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Chemical Engineering Basics

Chemical Engineering Basics
The predominant mode of heat transfer which takes place from boiler furnace to water walls of a boiler is

Convection
Both A & B
Conduction
Radiation

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Chemical Engineering Basics
__________ joint is usually used for joining cast iron pipes mostly used for temporary pipelines, where it may be necessary to dismantle & reassemble the pipeline very frequently.

Flanged
Collar
Bell and Spigot
Expansion

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Chemical Engineering Basics
Pipelines carrying various utilities in chemical industries are identified by their colour codes. The color of pipeline carrying steam is

Yellow
Black
Silver grey
Green

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Chemical Engineering Basics
Frost formation on the evaporator tubes in the domestic refrigerators

Can be prevented by proper design
Causes heat loss due to poor heat transfer
Decreased compressor power
Is immaterial

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

Lead
Brass
Aluminium
Copper

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Chemical Engineering Basics
A controller action in which there is a con-tinous relation between the values of controlled variable and the rate of change of conrolled output signal is called the __________ action.

Derivative
Integral
None of these
Proportional

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