0.5 d
d
1.5 d
2.5 d
✅ The correct answer is option C.
Chemical Engineering MCQs
1.2 to 3.8 cms is the value of the
downcomer liquid seal in case of a balanced tray design.
static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.).
skirt clearance for bubble caps.
all (a), (b) and (c).
✅ The correct answer is option D.
The most common standard size of bubble caps used in industrial operation is
1″ dia cap with 0.5″ dia riser.
6″ dia cap with 4″ dia riser.
8″ dia cap with 1″ dia riser.
4″ dia cap with 8″ dia riser.
✅ The correct answer is option B.
Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around
0.4-0.6
0.35-0.75
0.1-0.2
0.55-0.85
✅ The correct answer is option C.
The difficulty of liquid distribution in packed towers is accentuated, when the ratio of tower diameter to packing diameter is
< 30
< 7
> 7 < 15
> 20 < 50
✅ The correct answer is option B.
Rotary lime kiln is an example of a/an __________ system.
A. Closed
B. Open
C. Isolated
D. Non-thermodynamic
✅ The correct answer is option B.
Which is not a refrigerant?
A. SO₂
B. NH₃
C. CCl₂F₂
D. C₂H₄Cl₂
✅ The correct answer is option D.
For an ideal gas, the chemical potential is given by
A. RT dlnP
B. R dlnP
C. R dlnf
D. None of these
✅ The correct answer is option A.
Critical solution temperature (or the con-solute temperature) for partially miscible liquids (e.g., phenol-water) is the minimum temperature at which
A. A homogeneous solution (say of phenol water) is formed
B. Mutual solubility of the two liquids shows a decreasing trend
C. Two liquids are completely separated into two layers
D. None of these
✅ The correct answer is option A.
In a homogeneous solution, the fugacity of a component depends upon the
A. Pressure
B. Composition
C. Temperature
D. All of the above
✅ The correct answer is option D.