Chemical Engineering - Chemical Engineering Basics

41. 

Wave length of X-rays is about 1 angstron, however it can not pass through a sheet of

A. paper
B. cloth
C. lead
D. aluminium

Answer: Option C

Explanation:

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42. 

Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are

A. nickel, cobalt & chromium.
B. tungsten, chromium & cobalt.
C. manganese, chromium & cobalt.
D. tungsten, molybdenum & nickel.

Answer: Option B

Explanation:

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43. 

The minimum and the maximum number of members required to form a Private Limited Joint Stock Company are respectively

A. 7 and 30
B. 10 and 50
C. 2 and 50
D. 13 and 55

Answer: Option C

Explanation:

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44. 

The leaching solvent used in Baeyer's process for the purification of bauxite is

A. ammonium hydroxide
B. sodium carbonate
C. sodium hydroxide
D. ammonium carbonate

Answer: Option B

Explanation:

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45. 

Austempering process results in the formation of __________ structure.

A. martensitic
B. bainitic
C. carburised
D. stressed

Answer: Option B

Explanation:

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