This section contains 2 paragraphs `C_(49-51) and C_(52-54)`. Based upon each paragraph,
`C_(49+ 51)` : : Paragraph for Question Nos. 49 to 51
A colorless solid ‘X’ liberates a brown gas ‘Y’
Compound ‘X’ on treatment with NaOH gave an alkaline gas ‘Z’ which gives brown ppt with Nessler’s reagent. Compound ‘X’ on heating gave a neutral gas ‘T’ which was colorless and non reactive.
The gas Z is

Options

A. `NH_(3)`
B. `NH_(2)NH_(2)`
C. `NH_(2)- underset(underset(NH)(||))(C )-NH_(2)`
D. `N_(2)O`