1.

A + Oxygen to underset("Brown paramagnetic")B

Answer»

`A to NO, B to NO_(2), C to N_(2)O_(4)`
`A to N_(2)O, B to NO, C to NO_(2)`
`A to N_(2)O, B to N_(2)O_(4), C to N_(2)O_(3)`
`a to N_(2)O, B to N_(2)O_(4), C to N_(2)O_(5)`

ANSWER :A


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