A. 25
B. 35
C. 55
D. 75
✅ The correct answer is option C.
Basic Chemical Engineering MCQs
Oxygen cylinders used for autogenous (cutting/welding) purposes are
A. Seamless & made of steel
B. Heat treated before use
C. Made by sand casting
D. Welded steel cylinders
✅ The correct answer is option A.
Glass reacts with
A. H₂SO₃
B. HF
C. HNO₃
D. K₂Cr₂O₇
✅ The correct answer is option B.
Which of the following is an acidic constituent of B.F. slag ?
A. SiO₂
B. FeO
C. MgO
D. CaO
✅ The correct answer is option A.
Strain hardening effect in a metal subjected to cold working is due to the __________ mechanism.
A. Fracture
B. Dislocation
C. Slip
D. Twinning
✅ The correct answer is option C.
What is the range of tempering temperature (°C) for most of the materials ?
A. 75-100
B. 200-300
C. 350-450
D. 500-600
✅ The correct answer is option B.
The dimensions of Planck’s constant is the same as that of the
A. Kinetic energy
B. Momentum
C. Electrostatic potential
D. None of these
✅ The correct answer is option D.
Cassiterite is an ore of
A. Tin
B. Lead
C. Molybdenum
D. Chromium
✅ The correct answer is option A.
Tumbling is the process of improving the __________ of the materials/parts.
A. Surface finish
B. Fatigue limit
C. Creep limit
D. Surface cleanlineses
✅ The correct answer is option D.
Out of the following substances, one ton of __________ will store the maximum heat for a rise of 30°C in temperature.
A. Steel
B. Lignite
C. Water
D. Lime stone
✅ The correct answer is option C.