A. Manganese
B. Magnesium
C. Vanadium
D. Copper
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
Cadmium in zinc leach liquor is removed by cementation using
A. Zinc
B. Iron
C. Nickel
D. Copper
✅ The correct answer is option A.
Wrought iron is not
A. Uctile & resistant to corrosion/rusting
B. Weldable easily
C. Having uniform strength in all directions
D. Having maximum tensile strength along the lines of slag distribution
✅ The correct answer is option C.
__________ is a non volatile film forming constituent of a paint.
A. Thinner
B. Dryer
C. Drying oil
D. None of these
✅ The correct answer is option C.
In a fuel cell, chemical energy is converted into
A. Electrical energy directly
B. Mechanical energy
C. Electrical energy and stored therein
D. None of these
✅ The correct answer is option A.
Which of the following metals can not be hot worked at room temperature?
A. Zinc
B. Nickel
C. Lead
D. Tin
✅ The correct answer is option B.
Unbreakable crockeries are made from __________ polymers.
A. Polystyrene
B. Melamine
C. Polystyrene
D. Polyurathane
✅ The correct answer is option D.
Reduction in the grain size reduces the __________ of the material.
A. Fatigue resistance
B. Tensile strength
C. Creep resistance
D. All of the above
✅ The correct answer is option D.
Internal cracks in drawn bars are due to
A. Secondary tensile stresses
B. Temperature gradient in the work piece
C. Heated dies and grips
D. Internal compressive residual stress
✅ The correct answer is option A.
Old cycle handles are coated with nickel using
A. Cementation
B. Spray coating
C. Galvanising process
D. Tinning process
✅ The correct answer is option B.