Decoction
Dissolution
Percolation
Agitation and settling
✅ The correct answer is option C.
Chemical Engineering MCQs
Study of chemical kinetics is the easiest in the case of __________ reactions.
Irreversible
Reversible
Surface
Side
✅ The correct answer is option A.
An isothermal aqueous phase reversible reaction, P ⇋ R, is to be carried out in a mixed flow reactor. The reaction rate in k.mole/m³ .h is given by, r = 0.5CP – 0.125CR. A stream containing only P enters the
0.8
1.33
1.6
2.67
✅ The correct answer is option C.
Which of the following employs an accessory known as ‘drift eliminator’ ?
Multiple effect evaporator
Mechanical draft cooling tower
Rotary dryer
Rotating disc contactor
✅ The correct answer is option B.
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for
Fast reactions in catalyst of small pore diameter
Fast reaction in catalyst of large pore diameter
Slow reactions in catalyst of small pore diameter
Slow reactions in catalyst of large pore diameter
✅ The correct answer is option C.
Pick out the wrong statement pertaining to the analogy between equations of heat and mass transfer operations.
Sherwood number in mass transfer is analogous to Nusselt number in heat transfer
Prandtl number in heat transfer is analogous to Schmidt number in mass transfer
Reynolds number in mass transfer is analogous to Grashoff number in heat transfer
Reynolds number remains the same in both heat and mass transfer
✅ The correct answer is option C.
Laboratory determination of the dif-fusivity of vapor is done by __________ method.
Wetted wall column
Gilliland’s
Winkel mann’s
Wike’s
✅ The correct answer is option C.
Drying of a solid involves __________ transfer.
Only heat
Only mass
Both heat and mass
None of these
✅ The correct answer is option C.
Channelling in a packed tower results from the
High pressure drop
Maldistribution of liquid
Non-uniformity of packing
Both B and C
✅ The correct answer is option D.