The product $(P)$ in the reaction is:

Identify $A$ in the following reaction sequence:

Which of the following reactions do not represent the major product of given Birch reductions?

$A$ straight chain hydrocarbon has the molecular formula $C_8H_{10}$. The hybridisation for the carbon atoms from one end of the chain to the other are respectively $sp^3$,$sp^2$,$sp^2$,$sp^3$,$sp^2$,$sp^2$,$sp$ and $sp$. The structural formula of the hydrocarbon would be

Complete oxidation of hydrocarbons always produces........... as products.

The product of the above reaction will be: