What is formed when an amine is fused with sodium metal?

Match the compounds in List-$I$ with the observations in List-$II$,and choose the correct option.

List-$I$	List-$II$
$I$. Aniline	$P$. Sodium fusion extract of the compound on boiling with $FeSO_4$,followed by acidification with conc. $H_2SO_4$,gives Prussian blue color.
$II$. $o$-Cresol	$Q$. Sodium fusion extract of the compound on treatment with sodium nitroprusside gives blood red color.
$III$. Cysteine	$R$. Addition of the compound to a saturated solution of $NaHCO_3$ results in effervescence.
$IV$. Caprolactam	$S$. The compound reacts with bromine water to give a white precipitate.
	$T$. Treating the compound with neutral $FeCl_3$ solution produces violet color.

Which compound is responsible for the formation of a blue precipitate when ferric ions react with a Lassaigne's extract or potassium ferrocyanide solution?

Give the answers for the Lassaigne test:
$(i)$ If nitrogen and sulphur are both present,what observation is observed?
$(ii)$ If bromine is present,what is the observation?
$(iii)$ In the Lassaigne extract,if black precipitates are not obtained upon adding $CH_3COOH$ and lead acetate,what does this indicate?
$(iv)$ What is the reason for adding $FeSO_4$ to the Lassaigne extract?
$(v)$ Why is the Prussian blue colour observed?
$(vi)$ What does the violet colour with sodium nitroprusside in the Lassaigne extract indicate?

Statement $I$: Nitrogen in pyridine cannot be estimated by Kjeldahl’s method. Statement $II$: Nitrogen in pyridine changes to ammonium sulphate when heated with conc. $H_2SO_4$ in Kjeldahl’s method. Read the above given statements and choose the correct answer from the given options.

Beilstein test is used for the detection of which one of the following elements?