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Chemical Engineering Basics

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
Austempering of steel requires.it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to

Martensite
Bainite
Sorbite
Troostite

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Chemical Engineering Basics
The stress at which a metal fails by fatigue lies

In the plastic range
Near the fracture point of the stress-strain curve
In the elastic range
None of these

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Chemical Engineering Basics
What is the value of included angle of a triangular notch for maximum discharge ?

30°
90°
120°
60°

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Chemical Engineering Basics
Function of feed check valve in a boiler is to

Facilitate circulation of high pressure feed water
Regulate the water flow to boiler
Prevent the back flow of water
Check the water level in the boiler drum

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Chemical Engineering Basics
__________ iron is produced by the annealing of white cast iron.

Ductile
Grey
Nodular
Malleable

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