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Chemical Engineering Basics

Chemical Engineering Basics
Hydrogen in liquid steels is dissolved

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

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Chemical Engineering Basics
The main function of the deaerator used in the thermal power plant is to

Throttle down the steam pressure
Remove dissolved gases from feed-water
Enhance feed water temperature
Remove non-condensable gases from condenser

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Chemical Engineering Basics
In "Imperial Smelting Process" for extraction of zinc, zinc vapour thus produced is quenched in the external condenser by the use of the following :

Rain of molten lead
Blast of air
Mixture of water and air
Jet of water at high pressure

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Chemical Engineering Basics
Out of the following, the joint produced by __________ has the lowest strength.

Welding
Rivetting
Brazing
Soldering

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Chemical Engineering Basics
Which one is neutral in character ?

N₂O₅
N₂O₃
N₂O
N₂O₄

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Chemical Engineering Basics
On decreasing the grain size of a polycrys-talline material, the property most likely to deteriorate is

Fatigue
Creep
Toughness
Tensile strength

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