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(D) The test described is the Lassaigne's test for nitrogen. $1$. The sodium fusion extract contains sodium cyanide $(NaCN)$ if nitrogen is present in

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Nitrogen

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(D) The test described is the Lassaigne's test for nitrogen. $1$. The sodium fusion extract contains sodium cyanide $(NaCN)$ if nitrogen is present in the organic compound. $2$. When $NaCN$ reacts with iron$(II)$ sulphate $(FeSO_4)$,it forms sodium hexacyanoferrate$(II)$. $3$. Upon adding concentrated $H_2SO_4$,some $Fe^{2+}$ ions are oxidized to $Fe^{3+}$ ions. $4$. These $Fe^{3+}$ ions react with the hexacyanoferrate$(II)$ ions to form ferric ferrocyanide,$Fe_4[Fe(CN)_6]_3$,which is known as Prussian blue. $5$. Thus,the appearance of Prussian blue colour confirms the presence of nitrogen.

Test	Inference
$a$. Dil. $HCl$	Insoluble
$b$. $NaOH$ solution	Soluble
$c$. $Br_2/\text{water}$	Decolourization

When sodium fusion extract of an organic compound is boiled with iron$(II)$ sulphate solution followed by addition of concentrated $H_2SO_4$,it gives a Prussian blue colour. This confirms the presence of which element?

Similar Questions

The organic compound that gives the following qualitative analysis is:

Test Inference

$a$. Dil. $HCl$ Insoluble

$b$. $NaOH$ solution Soluble

$c$. $Br_2/\text{water}$ Decolourization

In which of the following compounds will nitrogen not be detected by the Lassaigne test?

In Lassaigne's test,the organic compound is fused with $Na$ followed by extraction with distilled water. Which of the following is not the product of this fusion reaction?

Which one of the following sets of elements can be detected using sodium fusion extract?

In the Lassaigne sodium fusion test,$N$ and $S$ of an organic compound are converted into:

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