Chemical Engineering - Chemical Engineering Basics

31. 

__________ of test specimens is not involved in any hardness testing method.

A. Fracture
B. Indentation
C. Wear
D. Scratch

Answer: Option A

Explanation:

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32. 

Out of the following, the most ductile material is

A. mild steel
B. copper
C. nickel
D. aluminium

Answer: Option A

Explanation:

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33. 

What happens, when SO2 is passed through a solution of H2S in water ?

A. Precipitation of sulphur takes place.
B. H2SO3 is formed.
C. Oleum is formed.
D. None of these.

Answer: Option A

Explanation:

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34. 

Which of the following will resist maxi-mum shock & vibration without cracking?

A. Grey cast iron
B. White cast iron
C. Malleable iron
D. Graphite

Answer: Option C

Explanation:

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35. 

Surface tension of a liquid

A. is due to intermolecular forces of cohesion.
B. decreases with rise in temperature.
C. is responsible for the spherical shape of an isolated liquid drop.
D. all (a), (b) & (c).

Answer: Option D

Explanation:

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