A. 1
B. 10
C. 30
D. 45
✅ The correct answer is option B.
Chemical Engineering MCQs
Hydrocyclone is a
A. Crusher
B. Wet classifier
C. Dry classifier
D. Magnetic separator
✅ The correct answer is option B.
Hardness & tensile strength of austenitic stainless steel can be increased by
A. Martempering
B. Cold working
C. Normalising
D. Hardening
✅ The correct answer is option B.
Which of the following has the least oili-ness ?
A. Mineral oils
B. Vegetable oils
C. Greases
D. Animal oils
✅ The correct answer is option A.
Which of the following alloying elements when added in steel does not improve its lachinability?
A. Sulphur
B. Phosphorous
C. Copper
D. Lead
✅ The correct answer is option C.
For the running of power generating turbines, the steam used should be
A. Wet
B. Superheated
C. At ordinary pressure
D. None of these
✅ The correct answer is option B.
Which of the following accounts for maximum loss of energy in a coal fired boiler?
A. Incomplete combustion of fuel
B. Outgoing flue gases
C. Radiation heat losses
D. Unburnt carbon in ash
✅ The correct answer is option B.
Minimum number of members required to form a Public Limited Joint Stock Company is
A. 7
B. 10
C. 12
D. 17
✅ The correct answer is option A.
A semi-conductor is damaged & behaves like a conductor, on passing a strong electric current through it, because it heats up the crystals & breaks the covalant bonds resulting in __________ electrons.
A. Lack of free
B. Excess of
C. Decrease in
D. None of these
✅ The correct answer is option B.
No cutting fluid is normally used, while machining
A. Cast iron
B. Aluminium
C. Mild steel
D. Stainless steel
✅ The correct answer is option A.