MHT CET Medical202622 April 2026Morning ShiftChemistryRedox ReactionsActual
Predict the oxidation number of of 'C' in K ₂ C ₂ O ₄ and in CH ₂ Cl ₂ .
Options
- A+3 and +2
- B+3 and 0
- C-3 and +2
- D+3 and -2
Correct answer
B. +3 and 0
Step-by-step solution
Let the oxidation number of C in K ₂ C ₂ O ₄ be x . The oxidation number of K is +1 and O is -2 . 2(+1) + 2x + 4(-2) = 0 2 + 2x - 8 = 0 2x = 6 x = +3 Let the oxidation number of C in CH ₂ Cl ₂ be y . The oxidation number of H is +1 and Cl is -1 . y + 2(+1) + 2(-1) = 0 y + 2 - 2 = 0 y = 0 The oxidation numbers of C are +3 and 0 . Answer: +3 and 0