Process Equipment and Plant Design MCQ Questions and answers

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Q. Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

(A) Hydrostatic head is required for refluxing the condensate
(B) Only the function of condensation is to be carried out
(C) Sub cooling of condensate is desired
(D) Both the functions of condensation & sub cooling are carried out in a single unit

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Q. In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

(A) 1.3 to 2
(B) 1.6 to 2
(C) 2.5
(D) 1.5 to 3

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Q. Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

(A) 1.25
(B) 1.75
(C) 2.5
(D) 3.5

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Q. Brass valves are usually made for pipe sizes __________ inches.

(A) ≤ 1
(B) ≤ 2
(C) > 2.5
(D) > 3.5

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Q. An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

(A) An increase in liquid viscosity
(B) An increase in relatived volatility for rectification columns
(C) Decrease in gas solubility for absorbers
(D) All of the above

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Q. Welded joint efficiency in the design of chemical process equipment is taken as

(A) 0.55
(B) 0.75
(C) 0.85
(D) 0.95

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Q. Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

(A) 30°
(B) 45°
(C) 60°
(D) 75°

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Q. 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

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Q. The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

(A) Equal to
(B) More than
(C) Less than
(D) Either B or C; depends on maximum permissible internal pressure

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Q. Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

(A) 0.1 to 0.25
(B) 0.3 to 0.5
(C) 0.5 to 0.6
(D) 0.65 to 0.80

Process Equipment and Plant Design MCQs with answers Page - 6

Q. Vertical condenser is advantageous to the horizontal condenser from operation point of view, when

Q. In a distillation column, bubble caps are located on trays with a pitch of __________ times the outside diameter of the caps.

Q. Minimum tube pitch recommended for shell and tube heat exchangers is about __________ times the outside diameter of the tube.

Q. Brass valves are usually made for pipe sizes __________ inches.

Q. An increase in the liquid resistance to interphase mass transfer and a resultant reduction in plate efficiency is caused by

Q. Welded joint efficiency in the design of chemical process equipment is taken as

Q. Apex angle of conical heads used in the bottom heads of chemical process equipments is usually

Q. Vapor velocity in a distillation column for non-foaming mixture is in the range of __________ times the flooding velocity.

Q. The wall thickness of thin cylindrical shell with hemispherical ends is __________ that of the spherical ends.

Q. Multiple blade paddle agitator is used for mixing high viscosity liquids/paste in which the paddle diameter is commonly 0.8 times the tank diameter. However, the width of the blade is in the range of __________ times the paddle diameter.

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