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Chemical Engineering Basics

Chemical Engineering Basics
Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

1.5
3
5
7

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

65
8
35
80

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Chemical Engineering Basics
A psychrometer does not measure the __________ temperature of moist air.

None of these
Dry bulb
Dew point
Wet bulb

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Chemical Engineering Basics
Filler material used in welding having the lowest melting point out of the following is

Brazing spelter
Soft solder
Silver solder
Aluminium

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Chemical Engineering Basics
Pick out the wrong statement. If the net positive suction head (NPSH) requirement of a pump is not satisfied, then

It will be cavitated
Its efficiency will not be affected
It will not develop sufficient head to raise water
It will deliver low discharge of liquid

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Chemical Engineering Basics
In the Bayer's process, bauxite is digested under pressure using

H₂SO₄
NH₃
HCl
NaOH

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