Match the salts given in Column I with their method of preparation given in Column II:

Choose the correct answer from the options given below:

The hydroxide of this metal is soluble is sodium hydroxide solution.

• Magnesium

• Lead

• Silver

• Silver

Select the correct answer from the choices A, B, C and D which is given:

A black colour solid which on reaction with dilute sulphuric acid forms a blue coloured solution is:

• Carbon

• Manganese (IV) Oxide

• Lead (II) Oxide

• Lead (II) Oxide

Sodium hydroxide solution is added to the solutions containing the ions mentioned in list X. List Y gives the details of the precipitate. Match the ions with their coloured precipitates.

A.   Pb2+	(i)  Reddish brown
B.  Fe2+	(ii) White insoluble in excess
C. Zn2+	(iii) Dirty green
D. Zn2+	(iv)  White soluble in excess
E. Cu2+	(v) White soluble in excess
F. Ca2+	(vi) Blue

Identify the cations in each of the following cases:
i) NaOH solution, when added to the solution (A), gives a reddish brown precipitate.
ii) NH₄OH solution, when added to the solution (B), gives White ppt which does not dissolve is excess.
iii) NaOH solution, when added to Solution (C), gives white ppt which is insoluble in excess.