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Ores and Minerals

Phosphine is ...

Question

Phosphine is obtained by__________.

C a_{3} P_{2} + H_{2} O \to

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P_{4} + N a O H \to

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C H C l_{3} + O_{2} \to

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C C l_{4} + O_{2} \to

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Solution

The correct options are
A $C a_{3} P_{2} + H_{2} O \to$
B $P_{4} + N a O H \to$
A) $C a_{3} P_{2} + H_{2} O \to C a (O H)_{2} + P H_{3}$ (Phosphine).Phosphine is evolved.
B) $P_{4} + 4 N a O H + 2 H_{2} O \to 2 P H_{3}$ (Phosphine) + $2 N a_{2} H P O_{3}$ .Phosphine is evolved.
C) $2 C H C l_{3} + O_{2} \to 2 H C l + 2 C O C l_{2}$ .
D) $O_{2} + C C l_{4} \to C O_{2} + 2 C l_{2}$ .
Only A&B reactions gives phosphine others won't give.
Hence option A & B are correct.

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