If the solute is added in the given solution than what observation can be made :

A solution of concentrated aqueous ammonia is added dropwise to 1mL of a dilute aqueous solution of copper (II) nitrate until a total of 1mL of the ammonia solution has been added. What observations can be made during this process?

Four metals A, B, C and D are in turn added to the following solutions one by one .The observations made are tabulated below. which is the most reactive metals? Why?

If neutral litmus solution is added to sodium acetate solution, what will you observe and why ?^(**"**)

If iron nails are added in zinc sulphate solution, the possible observation could be

What do you observe when caustic soda solution is added to the following solution : first a little and then in excess. CuSO_(4)

What do you observe when caustic soda solution is added to the following solution : first a little and then in excess. ZnSO_(4)