A. Increase the heat loss
B. Decrease heat loss and will have no effect beyond that
C. Decrease heat flux
D. Reduce convection heat loss compared to conduction heat less
✅ The correct answer is option B.
Basic Chemical Engineering MCQs
Normal dosage of chlorine in public water supply scheme ranges from __________ ppm.
A. 0.5 to 1
B. 10 to 15
C. 300 to 500
D. 1000 to 1500
✅ The correct answer is option A.
Which of the following approaches the ideal gas behaviour most closely?
A. Wet steam
B. Saturated steam
C. Superheated steam
D. Saturated water
✅ The correct answer is option C.
Sewage is not an excellent medium for the growth of
A. Aquatic creatures
B. Protozoa
C. Virus
D. Pathogenic bacteria
✅ The correct answer is option A.
Which of the following is not found in iron-carbon equilibrium diagram?
A. Curie point
B. Peritectic point
C. Eutectic point
D. Eutectoid point
✅ The correct answer is option A.
Difference at any instant between the value of the controlled variable and the set point is called the
A. Deviation
B. Derivative time
C. Error ratio
D. Differential gap
✅ The correct answer is option A.
The elastic strain in copper is due to the
A. Motion of dislocations
B. Stretching of atomic bonds
C. Breakage of atomic bonds
D. None of the above
✅ The correct answer is option A.
Alloying elements present in Hayness stel-lite, which has superior performance than high speed steel, are
A. Nickel, cobalt & chromium
B. Tungsten, chromium & cobalt
C. Manganese, chromium & cobalt
D. Tungsten, molybdenum & nickel
✅ The correct answer is option B.
In continuous casting of liquid steel, the mould is made of
A. Water cooled steel
B. Water cooled copper
C. Refractory oxide
D. Silicon carbide
✅ The correct answer is option B.
X-rays are
A. Positively charged
B. Negatively charged
C. Neutral
D. Of higher wavelength than visible light
✅ The correct answer is option C.