Which one of the following pairs of reactants does not form oxygen when they react with each other?

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F2,NaOH solution (hot, conc.)

F2, H2O

Cl2, NaOH solution (cold, dilute)

CaOCl2, H2SO4 (dilute, small amount)

answer is C.

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Detailed Solution

2F2+4NaOH⟶4NaF+2H2O+O2 (Hot, conc) 2F2+2H2O⟶4HF+O2Cl2+2NaOH⟶NaCl+NaClO+H2O2CaOCl2+H2SO4⟶CaCl2+CaSO4+2HCl+O2

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