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Chemical Engineering Basics

Chemical Engineering Basics
Hydrogen in liquid steels is dissolved

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

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Chemical Engineering Basics
Which of the following is an example of stress corrosion ?

Season cracking of brass
Neither (a) nor (b)
Caustic embrittlement of steel
Both (a) & (b)

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Chemical Engineering Basics
Source of heat supply in a cupola is

Coke
Charcoal
Lumpy coal
Pulverised coal

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Chemical Engineering Basics
Scaling occurs in boiler tubes due to the fact that, the solubility of Ca(OH)₂ __________ with increasing temperature.

Shows inversion of solubility
Increases
Decreases
None of these

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Chemical Engineering Basics
Which of the following is a boiler accessory i.e., not a boiler mounting ?

Feed check valve
Stop valve
Feed water pump
Blow off cock

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Chemical Engineering Basics
What is the value of included angle of a triangular notch for maximum discharge ?

120°
30°
90°
60°

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