A 5% solution of cane sugar (mol wt = 342) is isotonic with 1% solution of a substance X. The molecular weight of X is
34.2
171.2
68.4
136.8
How many gram of a dibasic acid (mol wt 200) should be present in 100 ml. of the aqueous solution to give 0.1 N?
1 g
2g
10g
20g
If a hydrated crystal has vapour pressure greater than that of water vapour in the atmosphere, the crystal is
Hygroscopic
Efflorescent
Deliquescent
Phosphorescent
According to Raoult's law, relative lowering of vapour pressure of a solution is equal to
moles of solute
moles of solvent
mole fraction of solute
mole fraction of solvent
A solution containing components A and B follows Raoult's law, when
A-B attraction force is greater than A - A and B- B
A - B attraction force is less than A - A and B - B
A- B attraction force remains same as A - A and B - B
Volume of solution is different from sum of volumes of solute and solvent
Which of the following aqueous solutions has minimum freezing point?
0.01 m NaCl
0.005 m MgI2
0.005 m C2H5OH
0.005 m MgSO4
Which one is a colligative property?
Boiling point
Vapour pressure
Osmotic pressure
Freezing point
The volume strength of 1.5 N H2O2 solution is
4.8
5.2
8.4
8.8
The lowering of vapour pressure of the solvent takes place on dissolving a non-volatile solute because
the surface tension of the solution decreases
the density of the solution increases
the molecules of the solvent on the surface are replaced by the molecules of the solute
the viscosity of the solution increases
