Phosphine is obtained by the reaction when:

White phosphorus is heated with

N a O H

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C a_{3} P_{2}

reacts with water

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Red phosphorus is heated with

N a O H

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Phosphorus is heated in a current of hydrogen

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Solution

The correct option is B $C a_{3} P_{2}$ reacts with water
$P_{4} + 3 N a O H + 3 H_{2} O ⟶ P H_{3} ↑ + 3 N a H_{2} P O_{2}$

$C a_{3} P_{2} + 6 H_{2} O ⟶ 3 C a (O H)_{2} + 2 P H_{3} ↑$

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