Chemical Engineering - Chemical Engineering Basics

46. 

No cutting fluid is normally used, while machining

A. cast iron
B. aluminium
C. mild steel
D. stainless steel

Answer: Option A

Explanation:

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47. 

An orthotropic material is a special class of anisotropic material, which is described by their properties in three perpendicular directions. An example of orthotropic material is

A. stainless steel
B. cast iron
C. wood
D. teflon

Answer: Option C

Explanation:

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48. 

pH value of rain water in India ranges from

A. 5.5 to 7.5
B. 8 to 9.5
C. 3.5 to 5
D. 9.5 to 10.5

Answer: Option A

Explanation:

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49. 

The capital & running costs of similar machines having unequal service life can be compared by the __________ method.

A. equivalant annual cost
B. rate of return
C. present net worth
D. capitalised cost

Answer: Option D

Explanation:

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50. 

Pick the odd man out.

A. Austempering
B. Martempering
C. Cyniding
D. Parkerizing

Answer: Option D

Explanation:

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