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Correct pair of compounds which gives bl...

Correct pair of compounds which gives blue colouration/precipitate and white precipitate, respectively, when their Lassaigne's test is separately done is

A

`NH_(2)NH_(2).HCl and ClCH_(2)COOH`

B

`NH_(2)CSNH_(2)andPhCH_(2)Cl`

C

`NH_(2)CH_(2)COOHandNH_(2)CONH_(2)`

D

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