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Lassaigne's test fails in...

Lassaigne's test fails in

A

`NH_2NH_2`

B

`H_2NCONH_2`

C

`C_6H_2NHNH_2`

D

`NH_2OH`

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The correct Answer is:
A
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  17. Write the structure of the following compound: 2-Bromo-6-methyl-5-hept...

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  18. Isomers are compounds with same formula and different properties. Writ...

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  19. Write the IUPAC name of:

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