Hole diameter of the sieve trays in the distillation column ranges from ______________ mm?
A. 1 to3
B. 4 to 8
C. 3 to 12.5
D. 12.5 to 18.5
Month: March 2019
Pick out the wrong statement pertaining to the design of the distillation column?
Pick out the wrong statement pertaining to the design of the distillation column?
A. Generally, a skirt clearance of 0.5″ to 1.5′ is recommended to prevent plugging of the slots by
residue build up
B. The purpose of the slot is to disperse the gas into the liquid in the form of small bubbles
C. If sufficient slot area is not provided, the gas may pass through the skirt clearance
D. None of these
Brass valves are usually made for pipe sizes ______________ inches?
Brass valves are usually made for pipe sizes ______________ inches?
A. ≤ 1
B. ≤ 2
C. > 2.5
D. > 3.5
The normal range of velocity of water in pipes is _______________ m/sec?
The normal range of velocity of water in pipes is _______________ m/sec?
A. 0.1-0.5
B. 1-2
C. 10-50
D. 15-30
What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers ?
What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers ?
A. 6.5 cms
B. 6.5 mm
C. Equal to tube I.D
D. Equal to tube O.D
Rate of filtrate delivery is inversely proportional to the___________________?
Rate of filtrate delivery is inversely proportional to the___________________?
A. Filtering area & the pressure difference driving force
B. Viscosity of filtrate
C. Cake & filter medium resistance
D. Both A. and B.
Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele’s method, this method_________________?
Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele’s method, this method_________________?
A. is more accurate in finding the number of equilibrium stages
B. accounts for the enthalpy changes in the process
C. Facilitates direct calculation of heat load on reboiler & condenser from, the diagram used in
this method
D. All A, B. & C.
The safe height (h) to diameter D. ratio (i.e., h/d) for liquid/petro fuel storage tank of capacity more than 45 kilolitres is less than _________________?
The safe height (h) to diameter D. ratio (i.e., h/d) for liquid/petro fuel storage tank of capacity more than 45 kilolitres is less than _________________?
A. 1
B. 2
C. 3
D. 3.5
What is the slope of the operating line in the stripping section of a distillation column ?
What is the slope of the operating line in the stripg section of a distillation column ?
A. 0
B. ∞
C. > 1
D. < 1
Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have ______________ roofs?
Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have ______________ roofs?
A. Conical
B. Flat
C. Floating
D. Fixed