Chemical Engineering - Chemical Engineering Basics

36. 

Factor of safety in machine design is defined as the ratio of ultimate stress to __________ stress.

A. working
B. bearing
C. yield
D. none of these

Answer: Option A

Explanation:

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37. 

Out of the following, the __________ pipe has the least corrosion resistance.

A. mild steel
B. copper
C. cast iron
D. wrought iron

Answer: Option D

Explanation:

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38. 

With increase in steam pressure, its specific volume decreases

A. rapidly first and then slowly.
B. linearly.
C. slowly first and then rapidly.
D. exponentially.

Answer: Option A

Explanation:

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39. 

Which of the following rays has the least wavelength?

A. Ultraviolet rays
B. Infrared rays
C. Cosmic rays
D. X-rays

Answer: Option C

Explanation:

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40. 

Hydrocyclone is a

A. crusher
B. wet classifier
C. dry classifier
D. magnetic separator

Answer: Option B

Explanation:

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