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Lassaigne's test for the detection of nitrogen fails in

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Lassaigne's test for the detection of nitrogen fails in

(a) H2N-CO-NHNH2.HCI

(b) NH2-NH2..HCI

(c) C6H5-NH-NH2.HCI

(d) C6H5CONH2

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1 Answer

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Best answer

Correct option (b) NH2-NH2..HCI

Explanation:

Lassaigne's test is given by those nitrogenous compounds in which carbon is also present along with nitrogen.

In NH2-NH2.HCI, carbon is absent, so it does not give Lassaigne's test.

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