A. Pure carbon
B. Pure silicon
C. Ferro silicon
D. Ferro manganese
✅ The correct answer is option C.
Basic Chemical Engineering MCQs
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.
The bulk modulus of a material with Poisson’s ratio of 0.5 is equal to
A. 3 x Young’s modulus
B. Young’s modulus
C. Infinity
D. Zero
✅ The correct answer is option C.
In the formation of cermets, the ratio of ceramic material to metallic material is usually 80:20. Which of the following is a cermet?
A. Zirconia
B. Alumina
C. Bakelite
D. Tungsten carbide
✅ The correct answer is option D.
Glycerene is used as a coolant in cooling of some engines instead of water, because
A. Its higher boiling point (290°C) increases its heat carrying capacity
B. Compartively less weight of coolant is required
C. Smaller radiator can be used
D. All of the above
✅ The correct answer is option D.