Related Questions

Addition of a non-volatile solute to a solvent produces a __________ in its solvent.
A Freezing point elevation
B Boiling point depression
C Vapor pressure lowering
D All of the above
The vapour pressure of a solution (made by dissolving a solute in a solvent) is __________ that of the pure solvent.
A Less than
B More than
C Equal to
D Either more or less; depends on the solvent
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
Which of the following holds good for a solution obeying Raoult's law (i.e., an ideal solution) (where, ΔH = heat of mixing, and ΔV = volume change on mixing ) ?
A ΔH = 1 (+ ve)and Δ V = -ve
B ΔH = 0
C ΔV = 0
D Both B and C
Addition of a non-volatile solute to a pure solvent
A Increases its freezing point
B Increases its boiling point
C Decreases its freezing point
D Both B and C
The osmotic pressure of a solution is directly proportional to the
A Lowering of vapor pressure
B Molecular concentration of the solute
C Absolute temperature of a given concentration
D All of the above
The activity co-efficient of the solute in a dilute solution
A decreases with increase of concentration of the solute
B increases with increase of concentration of the solute
C remains constant
D is unity at infinite dilution
If the partial pressure of the solvent in the vapor phase is equal to the vapor pressure of the solvent at that temperature, then the system is said to be at its
A Bubble point
B Saturation temperature
C Dew point
D Both B and C
On addition of solute in the solvent, the __________ of the solution decreases.
A Boiling point
B Freezing point
C Vapour pressure
D Both B and C
Heat of solution in a system in which both solute and solvent are liquids is termed as
A Heat of solvation
B Heat of hydration
C Standard integral heat of solution
D Heat of mixing

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