Write down the products of ozonolysis of 1,2-dimethylbenzene (o-xylene). How does the result support Kekulé structure for benzene?

1,2-dimethyl benzene on ozonolysis gives

Ozonolysis products of 2-ethylbut-1-ene are

Write down all the subsets of the following sets {1,2,3}

Write the structural formula of 2,3-Dibromo-1-phenylpentane,

Write the structural formula of 4-Ethyl-1-fluoro-2-nitrobenzene.

Write structure of the compound : 1-Bromo-4-sec. butyl-2- methylbenzene .

How does diborane react with H_2O ?

Write the structures of the following compounds : 1,4 - Dibromobut-2-ene

Describe any two methods of preparation of benzene. Why benzene does not behave like unsaturated compound? How does benzene react with i) Methyl chloride presence of anhydrous AlCl_(3) ii) A mixture of conc. HNO_(3) and conc. H_(2)SO_(4) below 60^(@)C .