Chemical Engineering - Chemical Engineering Basics

26. 

Area under the stress-strain curve upto the __________ is referred to as the modulus of resilience.

A. yield strength
B. elastic limit
C. proportional limit
D. maximum point

Answer: Option C

Explanation:

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27. 

__________ is the hardest oxide and is hence used where high wear resistance at high temperature is required.

A. Beryllia
B. Zirconia
C. Alumina
D. Magnesia

Answer: Option C

Explanation:

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28. 

Titanium alloys are welded using the Following process:

A. TIG welding.
B. Submerged arc welding.
C. Butt welding.
D. Electron beam welding.

Answer: Option A

Explanation:

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29. 

An alloy of Fe - 0.4 % C is

A. cast iron.
B. hypo-eutectoid steel.
C. hyper-eutectoid steel.
D. eutectoid steel

Answer: Option B

Explanation:

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30. 

A material in which the atoms are arranged regularly in some directions but not in others, is termed as 'mesomorphous material'; an example of which is

A. lead
B. glass
C. mica
D. silver

Answer: Option A

Explanation:

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