A. Casting
B. Cold working
C. Forging
D. Welding
✅ The correct answer is option A.
Basic Chemical Engineering MCQs
Basic open hearth furnace (BOF) is not used for producing __________ steel.
A. Killed
B. Rimming
C. High alloy
D. None of these
✅ The correct answer is option C.
Grey cast iron (used for making underground water pipes and manhole covers) as compared to steel has higher
A. Ductility
B. Impact strength
C. Machinability
D. Melting point
✅ The correct answer is option C.
Sacrificial anode method is used in the protection of pipelines which are buried underground. Sacrificial anode
A. Occurs higher in the electro-chemical series of metals
B. Is exemplified by magnesium plate
C. Is much cheaper than the cathodic base material to be guarded against corrosion
D. All of the above
✅ The correct answer is option D.
Uniform ramming of sand in green sand moulding process leads to
A. Reduced chance of gas porosity
B. Greater dimensional stability of the casting
C. Uniform flow of molten metal into the mould cavity
D. Less sand expansion type of casting defect
✅ The correct answer is option B.
Light year is the unit of
A. Distance
B. Time
C. Intensity of light
D. None of these
✅ The correct answer is option A.
Pig iron is a product of
A. Electric arc furnace
B. Cupola
C. Blast furnace
D. Open hearth furnace
✅ The correct answer is option C.
Induced draft fans provided in large thermal power plant boilers have __________ blades.
A. Forward curved
B. Backward curved
C. Double curved
D. Radial or straight
✅ The correct answer is option B.
Which of the following is a permanent fastening?
A. Rivets
B. Bolts
C. Screws
D. Keys
✅ The correct answer is option A.
Ferromagnetic material owe their properties to __________ inner sub-shells.
A. Completely filled
B. Partially filled
C. Equally filled
D. Vacant
✅ The correct answer is option B.