JEE Main & Advanced
Chemistry
Redox Reactions / रेडॉक्स अभिक्रियाएँ
Sample Paper
Topic Test - Redox Reactions
question_answer
What are the oxidation numbers of carbon in HCN, CO, HNC, respectively?
A)3, 3, 3
B)3, 2, -3
C)2, 2, 2
D)3, 2, 2
Correct Answer:
C
Solution :
[c] The oxdation number can be obtained when we write their structures. In the coordinate bond, no charge transfers considered if donor is more electronegative than the acceptor atom. Bond breaking, as shown, indicates a +2 charge on carbon in all cases.