Question
Chemistry Question on Classification Of Organic Compounds
Appearance of blood red colour on treatment of the sodium fusion extract of an organic compound with FeSO4 in presence of concentrated H2SO4 indicates the presence of element(s).
A
N & S
B
Br
C
S
D
N
Answer
N & S
Explanation
Solution
The appearance of a blood red color upon this reaction indicates the presence of both nitrogen and sulphur in the compound, as they combine to form thiocyanate ions (SCN−), which react with Fe3+ to produce Fe(SCN)3 with the characteristic blood red color.
So, the correct answer is : N & S.