Chemical Engineering - Chemical Engineering Basics

41. 

Maximum hardenability of steel depends upon its

A. chemical composition
B. carbon content
C. grain size
D. alloying elements content

Answer: Option D

Explanation:

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42. 

Blast furnace slag is mainly molten

A. sand
B. magnesium silicate
C. calcium silicate
D. iron pyrite

Answer: Option C

Explanation:

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43. 

A jet engine turbine blade is normally manufactured by

A. forging.
B. shell moulding.
C. investment casting.
D. pressure die casting.

Answer: Option C

Explanation:

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44. 

Stainless steel is welded using

A. oxy-acetylene flame.
B. oxy-hydrogen flame.
C. arc welding.
D. inert gas arc welding.

Answer: Option D

Explanation:

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45. 

The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________ BTU/hr.

A. 100
B. 200
C. 1000
D. 2000

Answer: Option B

Explanation:

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