In cold countries, ethylene glycol is added to water in the radiators of cars during winter. This results in
Lowering the freezing point
Reducing the specific heat
Reducing the viscosity
Making water a better conductor of electricity
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
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
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
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
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 van't Hoff factor for an aqueous solution of Al2(SO4)3 is
3
5
9
4
Acetic acid is dissolved in benzene, and the molecular mass is determined from the elevation of boiling point. The molecular mass obtained will be
60
120
180
30
Which one of the following salts will have the same value of van't Hoff factor (i) as that of K4[Fe(CN)6]?
Al2(SO4)3
NaCl
Al(NO3)3
Na2SO4
The volume strength of 1.5 N H2O2 solution is
4.8
5.2
8.4
8.8
