Q. Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration which confirm the presence of
A) S and Cl
B) N and S
C) N
D) S
Explanation
(c)
Acidified sodium fusion extract on addition of ferric chloride solution gives blood red colouration, which confirms the presence of N and S.
$3NaCNS + aq.FeCl_{3} \longrightarrow Fe(CNS)_{3} + 3NaCl$
red
(ferric thiocyanide)
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.