Sodium hydroxide solution reacts with phosphorus to give phosphine. To bring about this reaction. We need

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White phosphorus and dil. NaOH

White phosphorus and conc. NaOH

Red phosphorus and dil. NaOH

Red phosphorus and conc. NaOH

answer is B.

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Detailed Solution

P4+3NaOH+3H2O→PH3+NaH2PO4

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