Question

Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which confirms the presence of

• A. $S$
• B. $N$
• C. $N$ and $S$
• D. $S$ and $Cl$

Answer 1

Answer: (C)

$N$ and $S$

Answer 2

Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration, which confirms the presence of N and S. $3 NaCNS +a q \cdot FeCl _{3} \longrightarrow \underset{\text{red (ferric thiocyanide)}}{{Fe ( CNS )_{3}}}+3 NaCl$