A. 6.7
B. 7.6
C. 10.3
D. 15.2
✅ The correct answer is option A.
Chemical Engineering MCQs
Hooke’s law
A. Applies to elastic deformation
B. Applies beyond limit of proportionality in stress-strain curve
C. States that stress is inversely proportional to strain upto elastic limit
D. Noneofthese
✅ The correct answer is option A.
Which of the following is the most suitable material of construction for the condenser tubes, where the cooling medium is brine (salty water)?
A. Aluminium
B. Copper
C. Titanium
D. Stainless steel
✅ The correct answer is option C.
The reductant used in the extraction of magnesium from calcined dolomite via Pidgeon’s process is
A. Pure carbon
B. Pure silicon
C. Ferro silicon
D. Ferro manganese
✅ The correct answer is option C.
Endurance is a measure of fatigue limit of a metal. Fatigue crack in nitrided machine parts originates
A. At the surface
B. Within the core
C. Just below the surface
D. Anywhere on the surface
✅ The correct answer is option B.
Fire in fuel gas pipelines is extinguished most effectively by
A. Spraying water
B. Blanketting the area with nitrogen atmosphere
C. Fire fighting foam
D. None of these
✅ The correct answer is option B.
__________ property of steel increases by addition of large amount of silicon in it.
A. Mechanical
B. Machining
C. Magnetic
D. Refractory
✅ The correct answer is option C.
Stainless steel is welded using
A. Oxy-acetylene flame
B. Oxy-hydrogen flame
C. Arc welding
D. Inert gas arc welding
✅ The correct answer is option D.
Commonly used flux for brazing is
A. Zinc chloride
B. Borax
C. Ammonium chloride
D. Rosin
✅ The correct answer is option B.
Which of the following is not a suitable solid lubricant?
A. Talc
B. Molybdenum disulphide
C. Graphite
D. None of these
✅ The correct answer is option D.