Question

Match List - I (oxidation number) with List - II (The element) and select the correct answer using the code given below the list : 

List - I	List - II
(Oxidation number)	(The element)
A. 2	1. Oxidation number of Mn in MnO2
B. 3	2. Oxidation number of S in H2 S2 O7
C. 4	3. Oxidation number of Ca in CaO
D. 6	4. Oxidation number of Al in NaAlH4

Code :

Answer 1

The correct option is: (A)

Explanation:

MnO₂ 

(i) Oxidation of Mn in MnO₂ : 

 x + 2 (– 2) = 0 

 x = 4