NEET 2009 Chemistry question

Chemistry Redox Reactions NEET 2009

Oxidation numbers of P in , of S in and that of Cr in , are respectively :

(1)+ 3, + 6 and + 5
(2)+ 5, + 3 and + 6
(3)- 3, + 6 and + 6
(4)+ 5, + 6 and + 6Correct

Answer: (4)

Solution

In : , so for P. In : , so for S. In : $2x +

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Question ID VK-090286