give a test to distinguish b/w ethylamine and aniline ?

It gives positive test for coupling reaction. In which aniline reacts with benzene diazonium chloride in basic medium to give p-aminoazobenzene which is yellow in colour.It does not give  coupling reaction
It reacts with nitrous acid without release of N2 gas.It reacts with nitrous acid with release of N2 gas which can be detected for ethylamine presence

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