Chemical Engineering - Chemical Engineering Basics

46. 

Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

A. 1.5
B. 3
C. 5
D. 7

Answer: Option B

Explanation:

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47. 

Basic open hearth furnace (BOF) is not used for producing __________ steel.

A. killed
B. rimming
C. high alloy
D. none of these

Answer: Option C

Explanation:

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48. 

Principal alloying element in Elinvar (used for making hair springs for watches) is

A. copper
B. aluminium
C. nickel
D. zinc

Answer: Option C

Explanation:

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49. 

The value of y = cp/cv. at < 500°C for air & most common gases can be safely assumed to be

A. 0.8
B. 1
C. 1.4
D. 1.8

Answer: Option C

Explanation:

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50. 

Tesla metre per ampere (T. m/A) is the unit for the measurement of

A. magnetic succeptibility.
B. magnetic moment.
C. permeability of free space.
D. flux density.

Answer: Option C

Explanation:

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