Related Questions

The-relative volatility for separation of a non-ideal binary mixture by distillation should be
A 0
B 1
C > 1
Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when
A Only vapor phase follows Raoult's law
B Only liquid phase obeys Dalton's law
C Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law
D Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law
The relative volatility of a binary mixture at constant temperature __________ the total pressure.
A Decreases with increase in
B Increases with increase in
C Is independent of
D None of these
The relative volatility of a binary mixture at the azeotropic composition is
A 1
B > 1
C 0
D ∞
For a binary mixture with low relative volatility,
A Use steam distillation
B Use molecular distillation
C Use high pressure distillation
D An azeotrope may be formed during distillation
For a binary mixture with low relative volatility, continuous rectification to get pure products will require
A Low reflux ratio
B Less number of trays
C Small cross-section column
D High reflux ratio
Components, having widely different boiling point in a binary mixture, can be separated using __________ distillation.
A Molecular
B Extractive
C Steam
D Simple
A mixture contains 2/5 of element A and 3/5 of element B. When 5ml of A is added to the mixture, the proportion of B in the mixture changes to 1/5. What amount of A was originally present in the mixture before the addition was made ?
A 1ml
B 1.5ml
C 2.5ml
D 6ml
A jar contains a mixture of oil and water in the ratio 22 :3 . 50 litres of the mixture was taken out and 25 litres of water was added to it. If water was 34% in the resultant mixture, what was the initial quantity of the mixture (in litres ) in the jar?
A 175
B 150
C 75
D 125
In case of dry spinning of polymers, the polymer solution in a volatile solvent is forced through the spinnerates into a warm air chamber, where the solvent evaporates leaving behind the polymer in the filament form. Dry spinning is used for __________ fibres.
A Polythene
B PVC
C Rayon
D Polyvinyl acetate

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