It is advisable to keep stirring heap of wastes while burning them .
Write down two disadvantages of partial combustion

Keep two carbon rods immersed in copper sulphate solution.Then pass electricity thr-ough the solution: Write down chemcial equations for the changes occuring here.

Keep two carbon rods immersed in copper sulphate solution. Then pass electricity through the solution. i) At which electrode does colour change occur-anode or cathode? ii) Is there any change in the blue colour of the copper sulphate solution? iii) Write down the chemical equations for the changes occurring here?

A and B are two isomeric complex compounds. Both contain central Co(3+) Ion with coordination number 6 and 5 NH_3 ligands. They also contain Cl and SO_4 groups. A gives a white precipitate with barium chloride solution while B gives a white precipitate with AgNO_3 solution:- Write down the formulae of A & B.