A. Isomorphism
B. Polymorphism
C. Amorphism
D. Isomerism
✅ The correct answer is option B.
Chemical Engineering MCQs
The thermal efficiency of a heat engine giving an output of 4 KW with an input of 10000 Joules/sec is __________ percent.
A. 40
B. 80
C. 10
D. 25
✅ The correct answer is option A.
Biological shield in a nuclear reactor is generally provided to protect against the
A. α-rays
B. β-rays
C. Gamma rays & neutrons
D. Electrons
✅ The correct answer is option C.
CANDU type nuclear reactor using natural uranium as fuel is the extensively used nuclear reactor because of the fact that the
A. Specific fuel consumption is very low due to the use of heavy water
B. Fuel cost is much lower than that used in pressurised water or boiling water reactor
C. Heavy water is used both as coolant as well as moderator
D. Both B and C
✅ The correct answer is option D.
Rockwell number represents the
A. Hardness of a substance
B. Colour of a pigment
C. Density of a polymer
D. Active ingredients in a fertiliser
✅ The correct answer is option A.
The softness or hardness of a grinding wheel depends upon the type & amount of bonding material used. For general purpose cutter grinding __________ grinding wheel is normally used.
A. Hard
B. Soft
C. Silicon carbide
D. Aluminium oxide
✅ The correct answer is option D.
Increase in the entropy of a system represents the
A. Degradation of energy
B. Decrease in system pressure
C. Increase in the availability of energy
D. Increase in the temperature
✅ The correct answer is option A.
The capacity of a spring to store energy is called the spring form co-efficient. Stiffness of a spring is measured by the
A. Ability to absorb shock
B. Capacity to store energy
C. Ratio of the wire & coil diameters
D. Load to produce unit deflection
✅ The correct answer is option D.
__________ of grey cast iron produces white cast iron.
A. Tempering
B. Rapid heating
C. Rapid cooling
D. Slow cooling
✅ The correct answer is option B.
Hot dipping process is used for coating a low melting point metal (e.g. Pb, Sn, Zn) on iron, steel & copper having relatively higher melting points. Which of the following is not a hot dipping process?
A. Galvanising
B. Tinning
C. Sheardising
D. None of these
✅ The correct answer is option C.