Question

An organic compound ’A’ (C7H6Cl2) on treatment with NaOH solution gives  another compound ’B’ (C7H6O). ‘B’ on oxidation gives an acid ‘C’ (C7H6O2)  which on treatment with a mixture of conc. HNO3 and H2SO4 gives a  compound ‘D’(C7H5NO4). ‘B’ on treatment with conc. NaOH gives a compound  ‘E’ and C6H5COONa. Deduce the structures of A, B, C. D and E.​

Answer 1

The layer of soil which is just below the top-soil is called B-horizon. It is also known as sub-soil. The sub-soil is made up of slightly bigger rock particles than that of top-soil. ... The sub-soil has very little humus (decayed organic matter).