An alkene ‘A’ contains three C – C, eight C – H `(sigma)` bonds and one C – C `(pi)` bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

Explanation

(i)An aldehyde with molar mass 44 u is ethanal, `CH_3CH=O`
(ii)Write two moles of ethanal side by side with their oxygen atoms pointing towards each other. Remove the oxygen atoms and join them by a double bond, the structure of alkene 'A' is

As required , but-2-ene has three C-C, eight C-H `sigma`-bonds and one C-C `pi`-bond.