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Chemical Engineering Basics

Chemical Engineering Basics
Carbon is present in the form of __________ in grey cast iron.

Spheroids
Flakes
Nodular aggregates of graphite
Cementite

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Chemical Engineering Basics
Atomic __________ of an element is a whole number.

Radius
Weight
Volume
Number

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

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

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Chemical Engineering Basics
Alumina, silica, lime and iron oxide are the basic raw material for the manufacture of portland cement. The component of Portland cement which first hardens is

3CaO . Al2O₃
3CaO . SiO₂
2CaO . SiO₂
5CaO . 3 Al2O₃

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

None of these
Two
Three
One

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Chemical Engineering Basics
Thermal efficiency of an internal combustion engine is around __________ percent.

80
35
65
8

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