The size of a raw mango shrinks to a much
smaller size when kept in a concentrated salt
solution. Which one of the following processes
can explain this?
02Medium56×since 2002Q1995
In a mixture of A and B, components show negative deviation when :
03Medium56×since 2002Q1996
Which of the following liquid pairs shows a positive deviation from Raoult’s law?
04Easy56×since 2002Q1997
For which of the following parameters the structural isomers C₂H₅OH and CH₃OCH₃ would
be expected to have the same values? (Assume ideal behaviour)
05Medium56×since 2002Q1998
Benzene and toluene form nearly ideal solutions. At 20 ^oC, the vapour pressure of
benzene is 75 torr and that of toluene is 22 torr. The partial vapour pressure of
benzene at 20 ^oC for a solution containing 78 g of benzene and 46 g of toluene in
torr is
06Easy56×since 2002Q1999
18 g of glucose (C₆H₁₂O₆) is added to 178.2 g of water. The vapour pressure of water for this aqueous solution at 100^oC is
07Easy56×since 2002Q2000
A mixture of ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm at 300 K. The vapour
pressure of propyl alcohol is 200 mm. If the mole fraction of ethyl alcohol is 0.6, its vapour pressure
(in mm) at the same temperature will be
08Medium56×since 2002Q2001
At 80^oC, the vapour pressure of pure liquid ‘A’ is 520 mm Hg and that of pure liquid ‘B’ is 1000 mm Hg. If a mixture solution of ‘A’ and ‘B’ boils at 80^oC and 1 atm pressure, the amount of ‘A’ in the mixture is (1 atm = 760 mm Hg)
09Medium56×since 2002Q2002
The vapour pressure of water at 20^oC is 17.5 mm Hg. If 18 g of glucose (C₆H₁₂O₆) is added to 178.2 g of water at 20^oC, the vapour pressure of the resulting solution will be
10Easy56×since 2002Q2003
A binary liquid solution is prepared by mixing n-heptane and ethanol. Which one of the following
statements is correct regarding the behaviour of the solution ?