Statement-I : Ammonolysis of excess alkylhalide  in a sealed tube at 373 K is the best method to prepare 1° amines.Statement-II : Excess ammonia with alkyl halide at 373 K gives 1° amine as major product

I) Ammonolysis of alkyl halide gives a mixture of 1° amine, 2° amine, 3° amine and a 4° salt. This mixture is difficult to separate. This is not a suitable method to prepare 1° amine.R-X(Excess)→-HXNH3R-NH2→-HXR-XR2NH→-HXR-XR3N→ RXR4N+X-;II)  R-X+NH3excess→R-NH2major+HX