Match List - I with List - II :

	List - I		List - II
(a)	Be	(i)	treatment of cancer
(b)	Mg	(ii)	extraction of metals
(c)	Ca	(iii)	incendiary bombs and signals
(d)	Ra	(iv)	windows of X-ray tubes
		(v)	bearings for motor engines

Choose the most appropriate answer from the option given below :

In basic medium, H₂O₂ exhibits which of the following reactions?

(A) Mn²⁺ $$ \to $$ Mn⁴⁺

(B) I² $$ \to $$ I^$$-$$

(C) PbS $$ \to $$ PbSO₄

Choose the most appropriate answer from the options given below :

In the reaction of hypobromite with amide, the carbonyl carbon is lost as :

The secondary valency and the number of hydrogen bonded water molecule(s) in CuSO₄ . 5H₂O, respectively, are :