Related Questions

A vapor whose partial pressure is less than its equilibrium vapor pressure is called a __________ vapor.
A Saturated
B Supersaturated
C Superheated
D None of these
A vapor whose partial pressure is less than its equilibrium vapor pressure is called the __________ vapor.
A Saturated
B Superheated
C Unsaturated
D Dry gaseous
The purpose of providing bleed points in the evaporator is to
A Admit the feed
B Remove the product
C Facilitate removal of non-condensable gases
D Create vacuum
Which of the following accessories is provided in the vapor line of an evaporator for removing the entrained liquid?
A Bleed point
B Vent
C Catchall
D Baffle
For the same heat transfer area and the terminal conditions, the ratio of the capacities of a single effect evaporator to a triple effect evaporator is
A 3
B 0.33
C 1
D 1.33
The refrigeration effect in a dry evaporator compared to flooded evaporator in a similar plant is
A Same
B More
C Less
D More or less depending on ambient conditions
A multiple effect evaporator as compared to a single effect evaporator of the same capacity has
A Lower heat transfer area
B Lower steam economy
C Higher steam economy
D Higher solute concentration in the product
A dilute aqueous solution is to be concentrated in an evaporator system. High pressure steam is available. Multiple effect evaporator system is employed, because
A Total heat transfer area of all the effects is -less than that in a single effect evaporator system
B Total amount of vapor produced per Kg of feed steam in a multiple effect system is much higher than in a single effect
C Boiling point elevation in a single effect system is much higher than that in any effect in a multieffect system
D Heat transfer co-efficient in a single effect is much lower than that in any effect in a multieffect system
In a single evaporator system, the steam economy __________ by creating vacuum in the evaporator.
A Increases
B Decreases
C Remains constant
D May increase or decrease, depends on the vacuum
The suitable evaporator for concentration of foaming liquids is a __________ evaporator.
A Long tube
B Short tube
C Vacuum
D Falling film

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