A. 90% tungsten carbide and 10% cobalt
B. 70% aluminium oxide & 30% silica
C. 30% nickel, 15% chromium & 55% tungsten
D. 65% tungsten & 35% zirconium
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
A solar cell converts the sunlight directly into __________ energy.
A. Thermal
B. Electrical
C. Mechanical
D. Chemical
✅ The correct answer is option B.
Catalyst used in the catalytic converter employed in automobiles to convert CO into CO and for complete oxidation of un-burnt hydrocarbons is
A. Nickel
B. Cobalt
C. Vanadium
D. Platinum
✅ The correct answer is option D.
Which of the following is an unconventional source of energy ?
A. Thermal power
B. Hydroelectric power
C. Nuclear-fusion power
D. Solar power
✅ The correct answer is option D.
Which of the following is used to produce draught in the locomotive boilers ?
A. Chimney
B. Induced draught fan
C. Forced draught fan
D. Steam jet arrangement
✅ The correct answer is option D.
For grinding of softer materials, the grinding wheel should have __________ grain size.
A. Finer
B. Coarser
C. Medium
D. Any type of
✅ The correct answer is option B.
Plastics as a material of construction suffer from the drawback of low
A. Machinability
B. Density
C. Strength
D. Plastic deformation
✅ The correct answer is option C.
Use of economiser in a boiler plant reduces the fuel consumption for steam generation by about __________ percent.
A. 1
B. 10
C. 30
D. 45
✅ The correct answer is option B.
Hydrocyclone is a
A. Crusher
B. Wet classifier
C. Dry classifier
D. Magnetic separator
✅ The correct answer is option B.
Hardness & tensile strength of austenitic stainless steel can be increased by
A. Martempering
B. Cold working
C. Normalising
D. Hardening
✅ The correct answer is option B.