Give simple chemical tests to distinguish between the following pairs of compound
(a) Ethanal and Propanal
(b) Pentan-2-one and Pentan-3-one

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Solution

(a) Ethanal gives iodoform test but propanal does not give such test.

(b) Pentan-2-one gives iodoform test and Pentan-3-one does not give iodoform test.

Pentan-2-one gives white ppt with sodium bisulphite whereas pentan-3-one does not give ppt.

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