NEETChemistryRedox Reactions
Match List-I with List-II. List-I (Conversion) List-II (Change in oxidation state) A. C in CH ₄ CO ₂ 1. -3 to +2 B. N in NH ₃ NO 2. -4 to +4 C. S in H ₂ S SO ₂ 3. 0 to +5 D. I in I ₂ IO ₃^- 4. -2 to +4 Choose the correct answer from the options given below:
Options
- AA-2, B-4, C-1, D-3
- BA-2, B-1, C-4, D-3
- CA-4, B-1, C-2, D-3
- DA-2, B-1, C-3, D-4
Correct answer
B. A-2, B-1, C-4, D-3
Step-by-step solution
In CH ₄ , oxidation state of C is x + 4(+1) = 0 x = -4 . In CO ₂ , oxidation state of C is x + 2(-2) = 0 x = +4 . Change is -4 to +4 (A matches 2). In NH ₃ , oxidation state of N is x + 3(+1) = 0 x = -3 . In NO , oxidation state of N is x + 1(-2) = 0 x = +2 . Change is -3 to +2 (B matches 1). In H ₂ S , oxidation state of S is 2(+1) + x = 0 x = -2 . In SO ₂ , oxidation state of S is x + 2(-2) = 0 x = +4 . Change is -2 to +4 (C matches 4). In I ₂ , oxidation state of I is 0 . In IO ₃^- , oxidation state of I is x +