Adding surfactants in non polar solvent, the micelles structure will look like

$$\mathrm{H}_{2} \mathrm{O}_{2}$$ acts as a reducing agent in :

Which one of the following statements is correct for electrolysis of brine solution?

Cobalt chloride when dissolved in water forms pink colored complex $$\underline{\mathrm{X}}$$ which has octahedral geometry. This solution on treating with conc $$\mathrm{HCl}$$ forms deep blue complex, $$\underline{\mathrm{Y}}$$ which has a $$\underline{\mathrm{Z}}$$ geometry. $$\mathrm{X}, \mathrm{Y}$$ and $$\mathrm{Z}$$, respectively, are