The compound used as smoke screen:

P C l_{3}

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P C l_{5}

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P H_{3}

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H_{3} P O_{3}

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Solution

The correct option is C $P H_{3}$
The compound used as smoke screen is phosphine $P H_{3}$ .
$P H_{3} + C_{2} H_{2}$ is used in Holme signals.
Phosphine is also used for making metal phosphides like silver phosphide, copper phosphide.

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Similar questions

P H_{3}

P H_{5}

P C l_{3}

P C l_{5}

P H_{3}

s p^{3}

P C l_{5} (g) ⇌ P C l_{3} (g) + C l_{2} (g),

K_{c} .

4 H_{3} P O_{3} ⟶ 3 H_{3} P O_{4} + P H_{3}

H_{3} P O_{3}

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