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.Management Sciences
Category: Chemical Engineering Basics
Electrometallurgical methods of metal extraction is normally used for those metals___________________?
A. Whose oxide/ore is not reduced by carbon
B. Which fall in the category of alkali & alkaline earth metals
C. Which stands higher in the electrochemical series of the metal
D. All A, B. & C.
For efficient performance of a blast furnace, the extent of reduction of Wustite (FeO) should be___________________?
A. 100% indirect reduction
B. 100% direct reduction
C. 50-60% indirect reduction
D. 30-40% indirect reduction
Which of the following are considered applications of ultrasonic testing ?
A. Determination of elastic constant
B. Detection of defects in metal
C. Measurement of material thickness
D. None of the above
A jet engine turbine blade is normally manufactured by____________________?
A. Forging
B. Shell moulding
C. Investment casting
D. Pressure die casting
A solar cell converts the sunlight directly into ______________ energy?
A. Thermal
B. Electrical
C. Mechanical
D. Chemical
Which of the following is not categorised as the ore agglomeration process ?
A. Nodulising
B. Pelletising
C. Balling
D. Briquetting
Corrosion is____________________?
A. A physical phenomenon
B. A chemical phenomenon
C. Same as erosion
D. An uncontrollable phenomenon
Alloy powder manufactured by the following process have spherical shapes ?
A. Electrochemical deposition
B. Gaseous reduction
C. Atomisation
D. Mechanical attrition
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
Which of the following is an undesirable property of slag produced during the Pyrometallurgical method of metal extraction from its ore ?
A. High fusibility & fluidity
B. High thermal conductivity
C. Low density
D. High chemical activity
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