Related Questions

Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?
A Cost
B Availability
C Toxicity
D Selectivity
For separating small pieces of metal from engine oil of a car, the best separating technique is the
A Chromatography
B Evaporation
C Filtration
D Fractional distillation
Flash distillation is suitable for the separation of components
A Having very close boiling points
B Which form maximum boiling azeotrope
C Having very wide boiling points
D Which form minimum boiling azeotrope
Thermal conductivity based continuous flue gas analyser makes use of varying thermal conductivity of the constituents of flue gases. Which of the following constituents of flue gases has the maximum thermal conductivity?
A CO2
B N2
C O2
D CO
Flash distillation is
A Same as differential distillation
B Used for multicomponent systems like crude refining
C Same as simple distillation
D Most useful for handling binary systems
Large scale usage of flash distillation is practised in
A Soap manufacturing
B Ammonia synthesis plant
C Polymerisation industry
D Petroleum refinning
Flash point of atmospheric distillation residue is determined by __________ apparates.
A Pensky-Martens (closed cup type)
B Abel
C Cleveland (open cup type)
D None of these
If the amount of the steam used in steam distillation is increased, the temperature of distillation
A Increases
B Decreases
C Remains unchanged
D Depends on relative volatility
Vacuum maintained in the vacuum distillation tower of the crude distillation plant is about __________ mm Hg (absolute).
A 5-10
B 30-80
C 150-250
D 350-400
One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect
A The product composition but not the fraction vaporised
B The product composition as well as the fraction vaporised
C The fraction vaporised but not the product composition
D Neither the product composition nor the fraction vaporised

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