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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following is a unit of time ?

Light year
Barn
None of these
Angstrom

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Chemical Engineering Basics
If a heat transfer surface is pock-marked with a number of cavities, then as compared to a smooth surface the heat transfer by __________ will not increase.

Conduction
Radiation
Convection
Nucleate boiling

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Chemical Engineering Basics
Lime contains about 90% CaO. Percentage CaO present in limestone is about

80
25
70
50

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Chemical Engineering Basics
Speed of a submarine in deep sea & that of an aeroplane is measured by a/an

Rotameter
Hot wire anemometer
Stroboscope
Pitot tube

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Chemical Engineering Basics
The size of the tetrahedral void in the closest packing of atoms is __________ that of the octahedral void.

Greater than
Equal to
Either A, B or C; depends on the size of atom
Less than

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Chemical Engineering Basics
Hydrogen in liquid steels is dissolved

In the molecular form
As tiny gas bubbles
In the ionic form
In the atomic form

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