1. Pick out the wrong statement
o The liquid head in the downcomer should not be greater than one half the plate spacing to avoid flooding
o The dischare end of the dowiicomer must project far enough into the tray liquid so that no gas bubbles can enter the open end and by pass the
bubble caps
o If sufficient residence time (around 8 seconds) is not proivided to the downcoming liquid in the downcomer, it may entrain some vapour
o none of these
Ans: A
o The liquid head in the downcomer should not be greater than one half the plate spacing to avoid flooding
o The dischare end of the dowiicomer must project far enough into the tray liquid so that no gas bubbles can enter the open end and by pass the
bubble caps
o If sufficient residence time (around 8 seconds) is not proivided to the downcoming liquid in the downcomer, it may entrain some vapour
o none of these
Ans: A
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