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Chemical Engineering Basics

Chemical Engineering Basics
__________ of air does not increase with increase in temperature.

Thermal conductivity
Viscosity
Density
Thermal diffusivity

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Chemical Engineering Basics
The phenomenon of strain-ageing is generally experienced with

High manganese steel
Low carbon steel
High carbon steel
Cast iron

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

Two
Three
One
None of these

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

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

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

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

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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

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

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