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Chemical Engineering Basics

Chemical Engineering Basics
Hydrogen in liquid steels is dissolved

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

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Chemical Engineering Basics
Hollow shafts can be made as strong as solid shafts by making the twisting moments of both the shafts same. Shafts made by __________ have residual stresses.

Hot rolling
Forging
Cold rolling
Casting

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Chemical Engineering Basics
Materials having __________ lattice structure are usually the most ductile.

Hexagonal close packed (hcp)
None of these
Face centred cubic (fcc)
Body centred cubic (bcc)

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

1.5
5
7
3

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Chemical Engineering Basics
A 2 kg object weighs 1.8 kgf on a spring balance. The value of 'g' at that location in m/seC₂ is

8.82
9.81
0.95
10.88

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

25
70
50
80

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