Lassigne's solution on treating with sodium nitro prusside solution gives a violet colour indication the presence of ______in the organic compound.

Why is solution of KOH used to absorb CO_2 gas evolved during estimation of carbon in an organic compound?

How is sodium fusion extract prepared? Using this, how will you detect the presence of Nitrogen, Sulphur and Halogen in an organic compound?

Assertion : Absence of blood red colouration, during the Lassaigne's test for nitrogen definitely shows the absence of sulphur in the organic compound. Reason : Organic compounds containing both nitrogen and sulphur will necessarily give blood red colouration during the Lassaigne's test for nitrogen.

CH_(3)CO_(2)C_(2)H_(5) on reaction with sodium ethoxide in ethanol gives (A), which on heating in the presence of ac gives (B). Compound (B) is:

A solution containing 5.0 g urea per litre was found to be isotonic with 0.7 percent (wt./vol.) solution of an organic, non-volatile solute. Calculate the molar mass of the organic compound (molar mass of urea=60).

An inorganic compound on strong heating gave a blackish brown powder and two oxides of sulphur. The powder was dissolved in HC1 when a yellow solution was obtained which gave a blood red coloured solution with thiocyanide ions. The inorganic compound may be:

When sodium metal dissolves in liquid ammonia, it gives a deep blue coloured solution. Explain the reason.