What would you observe when zinc is added to a solution of iron (II)sulphate?Write the chemical reation that takes place.

Samples of four metals A,B,C and D were taken and added to the following solutions one by one.The results obtained have been tabulated as follows. Use the table above to answer the following questions about metals A,B,C and D. (i)Which is the most reactive metal? (ii)What would you observe if B is added to a solution of copper (II) sulpahate? (iii)Arrange the metals A,B,C and D in the order of decreasing reactivity.

What do you observe when adsorption takes place from solution phase.

What will happen when KI solution is added to AgNO_3 solution .

What is observed when sodium chloride is added to a colloidal solution of Ferric hydroxide?

What happens when H_2O_2 is added to acidified potassium dichromate solution? Write chemical equation.

Write the chemical reaction when iron reacts with dilute H_2SO_4 .

What is observed when a beam of light is passed through a colloidal solution?

What happens when excess of ammonia is added to CuSO_4 solution?

What happens when brine solution is electrolysed (Write the reaction)