JEE Main 2002Annual, Paper 1ChemistryEasyRedox Reactions and Electrochemistry138× since 2002Which of the following is a redox reaction ?AOption A. NaCl + KNO₃ →\to→ NaNO₃ + KClBOption B. CaC₂O₄ + 2HCl →\to→ CaCl₂ + H₂C₂O₄COption C. Mg(OH)₂ + 2NH₄Cl →\to→ MgCl₂ + 2NH₄OHDOption D. Zn + 2AgCN →\to→ 2Ag+ Zn(CN)₂CheckSkip · show solution
