equal sized reactors are the best.
smaller reactor should come first.
larger reactor should come first.
none of these.
✅ The correct answer is option B.
Process Equipment and Plant Design MCQs
The retention time of material in a rotary dryer depends upon its
rpm
slope & length
flights arrangement
all (a), (b) and (c)
✅ The correct answer is option D.
In a shell and tube heat exchanger, the clearance of the tube is generally
not less than one-fourth of the tube diameter or 3/16″.
more than the tube diameter.
equal to the tube diameter.
more in case of triangular pitch as compared to the square pitch tube layout.
✅ The correct answer is option A.
Brass valves are usually made for pipe sizes __________ inches.
≤1
≤2
>2.5
>3.5
✅ The correct answer is option B.
The dust collection efficiency of a cyclone separator
decreases with increase in gas flow rate.
is inversely proportional to the mass of the dust particle.
is directly proportional to the radius of the dust particle path.
none of these.
✅ The correct answer is option D.
In packed towers provided with saddle packing, liquid redistributors are positioned at every __________ times column diameter or 6 metres whichever is less.
2-Mar
5-Aug
Oct-15
20-25
✅ The correct answer is option B.
In a __________ rivetted joint, the number of rivets decreases from the innermost row to the outermost row.
chain
diamond
zig-zag
none of these
✅ The correct answer is option B.
In a distillation column, the minimum residence time for liquid in the downspout is about __________ seconds.
1
8
80
180
✅ The correct answer is option B.
__________ liquor is best handled in a long tube vertical evaporator.
Foamy
Scaling
Viscous
Salting
✅ The correct answer is option A.
The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is
0
∞
1
minimum
✅ The correct answer is option B.