A. Positive
B. Negative
C. No
D. None of these
Related Mcqs:
- A binary liquid Azeotropic mixture has boiling point lower than either of the components, when it shows _____________ deviation from Raoult’s Law?
A. Positive
B. Negative
C. No
D. None of these - The distance between the top of the slots and the liquid surface when the static liquid is just ready to flow over the overflow weir is called____________________?
A. Downcomer liquid seal
B. Static submergence
C. Skirt clearance
D. None of these - Vapor velocity in a distillation column for non-foaming mixture is in the range of ______________ times the flooding velocity?
A. 0.1 to 0.3
B. 0.6 to 0.7
C. 0.85 to 0.95
D. 1.5 to 2 - Smoker’s equation for the calculation of number of equilibrium stages in a continuous binary distillation column is used, when the_________________?
A. Relative volatility is close to one (e.g., separation of close boiling isomers)
B. Feed is not at its bubble point
C. Number of equilibrium stages in only stripping section is to be calculated
D. Number of equilibrium stages required is likely to be very small - With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the ______________________ decreases?
A. Fixed charges initially
B. Running cost of cooling water for condenser
C. Vapour & liquid load both
D. Running cost of steam for reboiler - Which of the following is not a graphical method (but is an analytical method) for the calculation of theoretical number of stages in case of continuous binary distillation ?
A. Sorel-Lewis method
B. McCabe-Thiele’s method
C. Ponchon-Savarit method
D. None of these - Liquid redistribution should be done in a packed tower packed with raschig rings every 6 metres or ______________ times the column diameter, whichever is lower?
A. 2.5-3.0
B. 5-7.5
C. 10-12.5
D. 15-20 - Liquid/petroleum fuel storage tanks are built underground (as in case of petrol pumps), when the storage capacity is less than ______________ kilolitres?
A. 20
B. 30
C. 45
D. 85 - In a distillation column, the minimum residence time for liquid in the downspout is about ______________ seconds?
A. 1
B. 8
C. 80
D. 180 - The average velocity in the tubes of a 1-4 heat exchanger is ______________ times that in 1-1 heat exchanger having the same size & number of tubes and operated at same liquid flow rate ?
A. 2
B. 1/2
C. 4
D. 1/4
