Which of the following nitrogen containing compound does not give Lassaigne's test?JEE Main 2024 (04 Apr Shift 1)AUreaBPhenyl hydrazineCGlyceneDHydrazine

The Lassaigne's test is a test for the detection of nitrogen, sulfur, and halogens in an organic compound.

Here are the steps to determine which of the given nitrogen-containing compounds does not give a positive Lassaigne's test:

1. Urea (NH2CONH2): Urea contains nitrogen and will give a positive Lassaigne's test.

2. Phenyl hydrazine (C6H5NHNH2): Phenyl hydrazine also contains nitrogen and will give a positive Lassaigne's test.

3. Glycine (NH2CH2COOH): Glycine is an amino acid that contains nitrogen and will give a positive Lassaigne's test.

4. Hydrazine (N2H4): Hydrazine contains nitrogen and will give a positive Lassaigne's test.

Therefore, all of the given compounds (Urea, Phenyl hydrazine, Glycine, and Hydrazine) contain nitrogen and should give a positive Lassaigne's test.

However, if the question is asking for a compound that does not give a positive Lassaigne's test for nitrogen, it might be a mistake or a trick question. All the given compounds contain nitrogen and should give a positive result.