JEE Main2015ChemistryGeneral Organic ChemistryActual
Match the organic compounds in column - I with the Lassaigne's test result in column - II appropriately: Column – I Column - II A. Aniline i. Red colour with F e C l 3 B. Benzene sulfonic acid ii. Violet color with sodium nitroprusside C. Thiourea iii. Blue color with and acidic solution of F e S O 4
Options
- AA - ii ; B - iii ; C - i
- BA - iii ; B - ii ; C - i
- CA - ii ; B - i ; C - iii
- DA - iii ; B - i ; C - ii
Correct answer
B. A - iii ; B - ii ; C - i
Step-by-step solution
Aniline ( C 6 H 5 NH 2 ) → it contains ( N ) element Benzene sulfonic acid ( C 6 H 5 SO 3 H ) → it contains ( S ) element Thiourea ( SC ( NH 2 ) 2 ) → it contains ( S   &   N ) element Test for nitrogen - The carbon and nitrogen present in the organic compound on fusion with sodium metal gives sodium cyanide ( N a C N ) soluble in water. This is converted into sodium ferro cyanide by the addition of sufficient quantity of ferrous sulphate. Ferric ions generated during the process react