[cupid.callin]

1) 0.004M solution of Na2SO4 is isotonic with 10^-2M solution of glucose at same temp. The percentage dissociation of Na2SO4 is

A.25%
B.50%
C.75%
D.85%

2) Which one is most acidic in aqueous form
A. NiCl2
B. FeCl3
C. AlCl3
D. BeCl2

3) Degree of dissociation of water at 25 degree C is 1.9 × 10^-7% and density is 1 g/cm3. Ionic constant of water is
A. 10^-14
B. 2 × 10^-16
C. 10^-16
D. 10^-8

4) The compound insoluble in acetic acid
A. Calcium Oxide
B. Calcium Carbonate
C. Calcium Oxalate
D. Calcium Hydroxide

5) The compound that is not Lewis Acid is
A. BF3
B. AlCl3
C. BeCl2
D. SnCl4

6) The reaction that proceeds towards forward direction is:
A. Fe2O3 + 6HCl  2FeCl3 + 3H2O
B. NH3 + H2O + NaCl  NH4Cl + NaOH
C. SnCl4    + Hg2Cl2  SnCl2 + 2HgCl2
D. 2CuI + I2 + 4H+  2Cu+2 + 4HI

[cupid.callin]

I know forum rules. But these are the questions I have no idea about. Please guide me to the results!!!

Thanks!!!