Chemical Engineering - Chemical Engineering Basics

31. 

Hot working of lead is carried out at

A. 75°C
B. 373°K
C. 150°C
D. room temperature

Answer: Option B

Explanation:

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32. 

An engineer's hammer is made of high __________ steel.

A. carbon
B. speed
C. silicon
D. chromium

Answer: Option A

Explanation:

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33. 

Impeller & casing of centrifugal pump handling corrosive liquid and frequently running under cavitation condition is most prone to __________ corrosion.

A. uniform
B. oxygen diffusion
C. pitting
D. inter-granular

Answer: Option C

Explanation:

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34. 

Isotropic materials have the same __________ in all the directions.

A. thermal properties
B. elastic properties
C. stresses
D. all (a), (b) & (c)

Answer: Option B

Explanation:

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35. 

The gases used in the treatment of asthma is a mixture of __________ and oxygen.

A. helium
B. argon
C. neon
D. none of these

Answer: Option A

Explanation:

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