The Lassaigne test is used for the detection of which of the following elements?

Which test is used to detect the presence of halogens in an organic compound?

Lassaigne's test is used for the detection of:

Which of the products indicates the presence of sulphur atom in an organic compound,in qualitative elemental analysis?

In the qualitative test for the identification of the presence of phosphorus,the compound is heated with an oxidizing agent. It is further treated with nitric acid and ammonium molybdate,respectively. The yellow-coloured precipitate obtained is:

Which of the following compounds would give the following set of qualitative analysis?
$(i)$ Fehling's Test : Positive
$(ii)$ $Na$ fusion extract upon treatment with sodium nitroprusside gives a blood red colour.