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Q. Which of the following represents a redox reaction?
  • A. NaOH + HCl → NaCl + H2O
  • B. Zn + 2HCl → ZnCl2 + H2
  • C. AgNO3 + NaCl → AgCl + NaNO3
  • D. BaCl2 + H2SO4 → BaSO4 + 2HCl