Related Questions

Experimental determination of __________ is done by wetted wall column method.
A Diffusion co-efficient
B Mass transfer co-efficient
C NTU
D None of these
The wetted wall tower is used to determine
A Individual mass transfer co-efficient (M.T.C.) in gaseous system
B M.T.C. of individual components in a liquid-liquid system
C M.T.of liquid in liquid-gas system
D The overall M.T.C. of the system
Wetted wall tower experiment determines the
A Molal diffusivity
B Volumetric co-efficient
C Mass transfer co-efficient
D None of these
In actual operation of a bubble cap distillation tower, the __________ at the bottom of the tower is more than that at the top of the tower.
A Molal flow rate of vapour
B Vapour molecular weight
C Pressure and temperature
D All of the above
A ladder is resting against a vertical wall and its bottom is 2.5 m away from the wall. If it slips 0.8 m down the wall, then its bottom will move away from the wall by 1.4 m. What is the length of the ladder?
A 6.2 m
B 6.5 m
C 6.8 m
D \7.5 m
A packed tower compared to a plate tower for a particular mass transfer operation
A Incurs smaller pressure drop
B Allows installation of cooling coils
C Is less costly when built in large sizes/diameters
D Is more suitable, if suspended solids are present in fluid streams
A marble ball is rolled on a smooth floor of a room to hit a wall. If the time taken by the ball in returning to the point of projection is twice the time taken in reaching the wall, the coefficient of restitution between the ball and the wall, is
A 0.25
B 0.50
C 0.75
D 1.0
A glass ball is shot to hit a wall from a point on a smooth floor. If the ball returns back to the point of projection in twice the time taken in reaching the wall, the coefficient of restitution between the glass ball and the wall is
A 0.25
B 0.33
C 0.40
D 0.50
The scales form in heat exchanges after a period of operation and provide additional resistance to heat transfer with some heat transfer coefficient . The reciprocal of this scale heat transfer coefficient is called .
A scaling factor
B forming factor
C resisting factor
D fouling factor
A painter has painted one-third of a rectangular wall which is ten feet high. When he will paint another 75 square feet of that wall, he will have finished three-quarters of the job. What is the length (the horizontal dimension) of the wall?
A 18 feet
B 12 feet
C 10 feet
D 9 feet

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