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Chemical Engineering Basics

Chemical Engineering Basics
Shaft/rotor speed is most accurately measured by a

Tachometer
Speedometer
Frequency counter
Strobometer

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Chemical Engineering Basics
The most detrimental impurity in high pressure boiler feed water is

Turbidity
Silica
Suspended salt
Dissolved salt

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Chemical Engineering Basics
In age-hardenable alloys, maximum ductility is obtained

Immediately after solution treatment and subsequent quenching
After overageing
In as cast state
After optimum ageing

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Chemical Engineering Basics
'Flare tower' used in industry is meant for

Venting off (after burning) the excess inflammable/toxic gases at high pressure
None of these
Absorbing the pollutant gases from the furnace exhaust
Cooling of furnace exhaust gases

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Chemical Engineering Basics
Eutectic reaction for iron-carbon system occurs at a temperature of __________ °C.

959
1147
723
1493

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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.

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

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