When P reacts with caustic soda, the products are PH3 and NaH2PO2. The reaction is an example of.
A
Oxidation
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B
Reduction
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C
Both oxidation and reduction
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D
Neutralisation
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Solution
The correct option is D Both oxidation and reduction P4+3NaOH+3H2O→PH3+3NaH2PO2
In reactant P is present in (0) oxidation state and in PH3, it is present in (-3) oxidation state and in NaH2PO2 it is present in (+1) oxidation state.