Given below are two statements :

Statement I : Colourless cupric metaborate is reduced to cuprous metaborate in a luminous flame.

Statement II : Cuprous metaborate is obtained by heating boric anhydride and copper sulphate in a non-luminous flame.

In the light of the above statements, choose the most appropriate answer from the options given below.

In the following reaction the reason why meta-nitro product also formed is :

What is the major product formed by HI on reaction with

'A' and 'B' in the following reactions are :