Write the formula of prussion blue colour formed in lassalgne's test for nitrogen detection.

Give the chemical name of the compound responsible for the blue colour in the Lassaigne's test for nitrogen.

Fill up the balnk. In Lassaigne's test for N, Prussian blue colour is formed due to the formation of ……

Which among the following may give a blood red colouration, during Lassaigne's test for nitrogen?

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.

Write the chemical formula of the compound formed by combining element S with P.

The element Cu with atomic number 29 undergoes chemcial reaction to formation with oxidation number +2: Write downthe chemical formula of one compound formed when this element re-acts with chlorine ("17CI) .

Sometimes a red colour is not produced in the Lassaignes test even if both nitrogen and sulphur are present in the Organic compound. Explain