Chemistry Organic Chemistry questions from JEE Main 2008.
$\alpha-D-(+)$-glucose and $\beta-D-(+)-g l u c o s e ~ a r e$
In the following sequence of reactions, the alkene affords the compound ' $B$ ' $\mathrm{CH}_3 \mathrm{CH}=\mathrm{CHCH}_3 \stackrel{\mathrm{O}_3}{\longrightarrow} \mathrm{A} \stackrel{\mathrm{H}_2 \mathrm{O}}{\mathrm{Zn}} \mathrm{B}$. The compound $\mathrm{B}$ is
Phenol, when it first reacts with concentrated sulphuric acid and then with concentrated nitric acid, gives
The absolute configuration of  is
The correct decreasing order of priority for the functional groups of organic compounds in the IUPAC system of nomenclature is
The electrophile, $\mathrm{E}^{\oplus}$ attacks the benzene ring to generate the intermediate $\sigma$-complex. Of the following, which $\sigma$-complex is of lowest energy?
The organic chloro compound, which shows complete stereochemical inversion during a $\mathrm{S}_{\mathrm{N}} 2$ reaction, is
The treatment of $\mathrm{CH}_3 \mathrm{MgX}$ with $\mathrm{CH}_3 \mathrm{C} \equiv \mathrm{C}-\mathrm{H}$ produces
Toluene is nitrated and the resulting product is reduced with tin and hydrochloric acid. The product so obtained is diazotised and then heated with cuprous bromide. The reaction mixture so formed contains