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A white solid X reacts with dil. HCl to ...

A white solid X reacts with dil. HCl to give colourless gas which is used in fire extinguishers. The solid X is

A

`X=PH_(3) and Y=PH_(4)I`

B

`X=PH_(4) and Y = PH_(4)I`

C

`X=NaH_(2)PO_(2) and Y=H_(3)PO_(2)`

D

`X=PH_(3) and Y = H_(3)PO_(2)`

Text Solution

Verified by Experts

The correct Answer is:
A
`N_(2)O_(4)+H_(2)O rarr HNO_(2) +HNO_(3)`
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