A. Cooled and dehumified
B. Heated and humidified
C. Cooled and humidified
D. Heated and dehumidified
✅ The correct answer is option C.
Basic Chemical Engineering MCQs
Faraday’s law of electrolysis is related to the
A. Cation speed
B. Atomic number of the cation
C. Equivalent mass of the electrolyte
D. None of these
✅ The correct answer is option C.
Which of the following is the most wear resistant grade of carbide used for the cutting tools?
A. Aluminium carbide
B. Tungsten carbide
C. Nickel carbide
D. Iron carbide
✅ The correct answer is option B.
Electrolytic reduction cell used for conversion of calcined Al2O₃ to Al is a carbon lined furnace operating at 800-900 °C. The purpose of electric current supplied to the furnace is to
A. Achieve very high purity of aluminium (99.9%)
B. Keep the electrolyte in liquid condition by the generation of heat
C. Electrolytically dissociate alumina
D. Both(b) & (c)
✅ The correct answer is option D.
Percentage of gaunge is maximum in the ore of
A. Iron
B. Gold
C. Zinc
D. Copper
✅ The correct answer is option B.
Air refrigeration cycle is used in the air crafts, because of
A. Low temperature encountered at high altitude
B. Its high heat transfer rate
C. Its low unit weight per ton of refrigeration
D. Its higher co-efficient of performance (COP)
✅ The correct answer is option C.
Maximum amount of thermal radiation is emitted at all wavelengths at any specified temperature by a/an __________ body.
A. Grey
B. Black
C. Opaque
D. White
✅ The correct answer is option A.
According to maximum shear stress failure criterion, yielding in material occurs, when the maximum shear stress is equal to __________ times the yield stress.
A. 0.5
B. 2
C. √2
D. √3/2
✅ The correct answer is option A.
Iron content in Indian iron ore is about __________ percent.
A. 80-85
B. 60-65
C. 40-45
D. 20-25
✅ The correct answer is option B.
The machanism involved in the removal of metal in drilling operation is by
A. Compression
B. Extrusion
C. Shearing
D. Both A & C
✅ The correct answer is option D.