The chemical test which can be used to distinguish between ethanamine and aniline is:
Aromatic amines form diazonium.
Haloform test
Tollens' test
Azo dye test
Hinsberg test
Aniline forms diazonium → azo dye.



Draw a rough sketch for the curve $y = 2 + |x + 1|$. Using integration, find the area of the region bounded by the curve $y = 2 + |x + 1|$, $x = -4$, $x = 3$, and $y = 0$.