An unknown organic compound 'X' is subjected to quantitative analysis for nitrogen. It successfully yields nitrogen gas when analysed by Dumas method, but fails to yield ammonia when subjected to Kjeldahl's method. Identify compound 'X' from the given options.

Step-by-step solution

Dumas method is universally applicable for the estimation of nitrogen in all types of nitrogen-containing organic compounds. Kjeldahl's method has limitations: it is not applicable to compounds containing nitrogen in nitro groups, azo groups, and nitrogen present in the ring. Azobenzene contains an azo group ( -N=N- ), so its nitrogen cannot be converted to ammonium sulphate in Kjeldahl's method, thus failing to yield ammonia. Benzylamine, N-Methylaniline, and Acetamide contain amine or amide nitrogen, which succes