Q.

PH3 produces smokly rings when it comes in contact with air. This is because :

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a

It is inflammable

b

It combines with water vapors

c

It contains impurity of P2H4

d

It combines with nitrogen

answer is D.

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Detailed Solution

PH3 contains P2H4 as impurity. P2H4 readily catches fire when released into air and lights PH3 to produce smoke.

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PH3 produces smokly rings when it comes in contact with air. This is because :