Out of `MgCl_2` and `AlCl_3`, which one is more effective in causing coagulation of negatively charged sol and why?

Out of BaCl_2 and KCl which one is more effective in causing coagulation of negatively charged colloidal sol. Give reason.

Which of the following is most effective in causing the coagulation of ferric hydroxide sol?

Out of Cu_2 Cl_2 and CuCl_2 which is more stable and why ?

which of the following electrolyte will be most effective in coagulation of negative sol ?

Which of the following electrolytes will be most effective in causing the coagulation of a positively charged ferric hydroxide sol ?

Which of the following is most effective electrolyte in causing the flocculation of a negatively charged arsenious sulphide solution ?

Out of alcohol and water, which one is more acidic and why?

Among the following which is/are correct statement about the metal sulphide sols ? the sol particles are positively charged due to preferential adsorption of metal ions, the sol particles are negatively charged due to preferential adsorption of sulphide ions, the cations of added electrolytes are effective in causing the coagulation of the sol, the sol is due to both the electric charge and hydration of the particles.

Out of V^(2+) and V^(3+) which is more paramagnetic and why ?

Out of Cu^(2+) and Cu^(+) ion, which one is colourless and why?