A. 0.8
B. 7.8
C. 200
D. 10000
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
The hardness of the lathe bed material is measured by the
A. Shore sceleroscope
B. Brinnel hardness tester
C. Vicker’s hardness tester
D. Rockwell hardness tester
✅ The correct answer is option A.
On oscilloscope screen for dynamic measurement, lissajous diagram is normally used to determine the __________ of the input signal.
A. Frequency
B. Amplitude
C. Damping
D. None of these
✅ The correct answer is option A.
Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that
A. Pure oxygen has been used for combustion
B. Nitrogen percentage in the fuel is very high
C. Excess air has been used for combustion
D. Hydrogen is not present in the fuel
✅ The correct answer is option C.
Addition of silicon to cast iron
A. Promotes graphite module formation
B. Improves its ductility
C. Does not promote graphite flakes formation
D. Increases the fluidity of molten metal
✅ The correct answer is option D.
The most suitable material of construction for a sewer to carry sewage under high pressure is
A. Asbestos cement
B. Steel
C. Cement concrete
D. Stoneware
✅ The correct answer is option B.
Often earing defects are found during deep drawing operation, because the
A. Surface finish of the sheet is poor
B. Sheet material has been given substantial spring back
C. Starting sheet has planer anisotropy due to its texture
D. Starting sheet has normal anitropy due to its texture
✅ The correct answer is option C.
Resistance of an electrical conductor is proportional to its (where, l = length and A = cross-sectional area of the conductor)
A. A
B. L
C. A²
D. Both A & B
✅ The correct answer is option D.
Titanium is produced by __________ of Ti Cl₄.
A. Electrolytic reduction
B. Calcium reduction
C. Magnesium reduction
D. Thermal dissociation
✅ The correct answer is option C.
Corrosion rate can not be lowered by reducing the __________ of the corroding medium.
A. Concentration
B. Velocity
C. Temperature
D. None of these
✅ The correct answer is option A.