1.

Due to which one of the following 'vortex rings' are formed?A. `PH_(3)`B. `P_(2)H_(4)`C. `N_(2)O`D. `NO_(2)`

Answer» Correct Answer - B
Generally `PH_(3)` is associated with tracess of `P_(2)H_(4)` (phosphorus dihydride). `P_(2)H_(4)` catches fire spontaneously forming rings of smale known as ' vortex rings'. `(P_(2)H_(4)` is highly inflamable)
`(2P_(2)H_(4)+7O_(2)rarr 4HPO_(3)+2H_(2)O)`


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