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Redox Reactions question

2002 · Shift 0 · Q36
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Redox Reactions question

2002 · Shift 0 · Q36

JEE MainChemistryRedox ReactionsMCQ+4 / −1
Which of the following is a redox reaction ?
  1. A
    NaClNaClNaCl + KNO3KNO_3KNO3​ →\to→ NaNO3NaNO_3NaNO3​ + KClKClKCl
  2. B
    CaC2O4CaC_2O_4CaC2​O4​ + 2HClHClHCl →\to→ CaCl2CaCl_2CaCl2​ + H2C2O4H_2C_2O_4H2​C2​O4​
  3. C
    Mg(OH)2Mg(OH)_2Mg(OH)2​ + 2NH4ClNH_4ClNH4​Cl →\to→ MgCl2MgCl_2MgCl2​ + 2NH4OHNH_4OHNH4​OH
  4. D
    ZnZnZn + 2AgCNAgCNAgCN →\to→ 2Ag+Ag^+Ag+ Zn(CN)2Zn(CN)_2Zn(CN)2​
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