Name the metal hydroxides which are:

(a) Insoluble

(b) Soluble

in

(i) caustic soda solution

(ii) Ammonium hydroxide solution

What do you observe when ammonium salt is heated with caustic soda solution? Write the word equation:

Why the alkali is added drop by drop to the salt solution?

Write balanced equation:

(a) Reaction of sodium hydroxide solution with Iron (III) chloride solution

(b) Copper sulphate solution with ammonium hydroxide solution