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
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
A 500g of tooth paste sample has 0.4g fluoride concentration. The concentration of fluoride in ppm is
800
400
600
250
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
The volume strength of 1.5 N H2O2 solution is
4.8
5.2
8.4
8.8
The vapour pressure, at a given temperature, of an ideal solution containing 0.2 mole of a non volatile solute and 0.8 mole of solvent is 60 mm of Hg. The vapour pressure of the pure solvent at the same temperature is.
150 mm of Hg
60 mm of Hg
75 mm of Hg
120 mm of Hg
Which one is a colligative property?
Boiling point
Vapour pressure
Osmotic pressure
Freezing point
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
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
