Chemical Engineering - Chemical Engineering Basics

31. 

Hot extrusion of aluminium is done in the temperature range of __________ °C.

A. 550-600
B. 450-500
C. 350-400
D. 250-300

Answer: Option C

Explanation:

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32. 

Stellite is a __________ material.

A. ferrous
B. ceramic
C. cemented carbide
D. non ferrous cast alloy cutting tool

Answer: Option D

Explanation:

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33. 

Percentage of argon (by volume) in dry atmospheric air is about

A. 0.09
B. 0.3
C. 0.57
D. 0.94

Answer: Option D

Explanation:

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34. 

An abrupt and sudden fall in the readinp of barometer is an indication of the

A. storm
B. rain
C. clear weather
D. cold wave

Answer: Option A

Explanation:

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35. 

Steam condenser tubes are made of ad-mirability brass, in which percentage of zinc & copper are __________ respectively.

A. 70 & 30
B. 30 & 70
C. 50 & 50
D. 90 & 10

Answer: Option A

Explanation:

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