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Chemical Engineering Basics

Chemical Engineering Basics
Which of the following metals reacts violently with water ?

Sodium
Magnesium
Mercury
Calcium

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Chemical Engineering Basics
A cylinderical rod subjected to a tensile strain within the elastic limit undergoes a volume change. If the volume strain is equal to half the tensile strain, then the Poisson's ratio of the rod is

0.44
0.33
0.25

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Chemical Engineering Basics
For hardening high alloy steel, it is to be heated slowly and uniformly to avoid

Warpage
Scale formation
Segregation
Local hardening

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Chemical Engineering Basics
Laser welding is widely employed in the __________ industries.

Electronic
Heavy
Structural
Process

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

35
65
80
8

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Chemical Engineering Basics
Austempering of steel requires.it to be heated to 875°C followed by sudden cooling to 250-525°C, thereby changing austenite to

Troostite
Bainite
Sorbite
Martensite

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