Question

How many of the following can given Fehling solution test ?
(i) $HCHO$ (ii) $C{H}_{3}CHO$ (iii) $PhCHO$
(iv)
(v)
(vi) (vii) Glucose (viii) Fructose

Answer 1

Fehling test is used to distinguish aldehydes and ketones. It gives $+ve$ result to aldehydes except $PhCHO$ and gives negative result to ketone except alpha hydroxy ketones.
So, $(i,ii,vi,vii,viii)$ are shows postive results for Fehling's test.