Question

Cut surfaces of fruit and vegetables often become dark because [DPMT 1983; CPMT 1983]
A) Dirty knife makes it dark
B) Oxidation of tannic acid in the presence of trace of iron from the knife makes it dark
C) Dust of the air makes it dark
D) None of the above

Answer 1

Heyaaa...

Ur answer is B) Oxidation of tannic acid in the presence of trace of iron from the knife makes it dark...

Hope it helps...

And here CutieBarbie :)

Answer 2

Cut surfaces of fruit and vegetables often become dark because
➡️ Oxidation of tannic acid in the presence of trace of iron from the knife makes it dark