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Question

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

A
F2, NaOH solution (hot, concentrated)
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B
F2,H2O
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C
Cl2,NaOH solution (cold, dilute)
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D
CaOCl2,H2SO4 (dilute, small amount)
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Solution

The correct option is C Cl2,NaOH solution (cold, dilute)
The reactions are as follows:
(a) 2F2+4NaOH4NaF+2H2O+O2
(b)
2F2+2H2O4HF+O2
(c) Cl2+2NaOHNaCl+NaClO+H2O
(d) 2CaOCl2+H2SO4CaCl2+CaSO4+2HCl+O2]
Hence, the correct answer is option (c).

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