A. Low corrosiveness
B. Low dirt factor
C. High specific heat (Correct)
D. Low viscosity
Chemical Engineering / Q&A
Multiple effect evaporation accounts for___________________?
A. Steam economy (Correct)
B. Lower operating costs
C. Investment economy
D. None of these
Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will_________________?
A. Decrease on addition of Cl2
B. Increase on addition of an inert gas at constant pressure
C. Decrease on increasing the pressure of the system
D. None of these (Correct)
In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the_______________?
A. Liquid gradient on the tray (Correct)
B. Lower skirt clearance
C. Lower static submergence
D. Small downcomer liquid seal
The retention time of material in a rotary dryer depends upon its ______________________?
A. rpm
B. Slope & length
C. Flights arrangement
D. All A., B. and C. (Correct)
Mercaptans are________________?
A. Low boiling sulphur compounds
B. Added in LPG cylinders to detect gas leakage by its smell
C. Undesirable in petrol, as they reduce its octane number
D. All A., B. and C. (Correct)
The ends of a cylindrical vessel can be closed by a head, which can be one of the four shapes. For the same thickness, choose the one which can withstand the highest pressure ?
A. Flat plate
B. Hemispherical
C. Torispherical
D. Ellipsoidal (Correct)
How many molecules per unit cell are there in a face centred cubic lattice ?
A. 2
B. 4 (Correct)
C. 6
D. 8
_____________ atmosphere is maintained inside an iron blast furnace?
A. Oxidising
B. Reducing (Correct)
C. Inert
D. Decarburising
Percentage elongation of a material is a measure of its _______________________?
A. Ductility (Correct)
B. Brittleness
C. Toughness
D. Malleability