Ultrapure elements are obtained in the following method of metal refining

In dry cell cathode is

Three faradays of electricity are passed through molten Al₂O₃, aqueous solution of CuSO₄ and molten NaCl taken in three different electrolytic cells. The amount of Al,Cu and Na deposited at the cathodes will be in the ratio of

Order of boiling points

CCl₃COCH₃+Ca(OH)₂→X+Y. Here X and Y are

For the reversible reaction C₂H₄+H₂↔C₂H₆ the equilibrium constant can be expressed in units of

In which of the following reactions, the concentration of reactant is equal to concentration of product at equilibrium(K=equilibrium constant)

For the estimation of sulphur by Carius method, the organic compound is heated in Carius tube with

In the reaction BCl₃+PH₃→[Cl₃B←PH₃] the lewis base is

The charge present onn one azide ion in columbs is