NEET Chemistry Hydrocarbons MCQs

Because of unsaturation benzene easily undergoes additions

There are two types of ${\rm{C}} - {\rm{C}}$ bonds in benzene molecule

There is a cyclic delocalisation of $\pi -$electrons in benzene

Monosubstitution of benzene gives three isomeric products

Toluene

Benzene

Naphthalene

pyridine

Oil

Fat

Rubber

All of these

Deactivates the ring for ${{\rm{S}}_E}$ reaction

Activates the ring for ${{\rm{S}}_E}$ reactions

Renders the ring basic

Deactivates the ring for ${{\rm{S}}_N}$ reaction

The relative electron density on $meta$ carbon is more than that of $ortho$ and $para$ positions

Loss of aromaticity when ${\rm{B}}{{\rm{r}}^ + }$ attacks at the $ortho$ and $para$ positions and not at $meta$ position

Easier loss of ${{\rm{H}}^ + }$ to regain aromaticity from the $meta$ position than from $ortho$ and $para$ positions

None of the above

Base

Acid

Reducing agent

Catalyst

Benzoic acid

Benzaldehyde

Benzoic anhydride

Maleic anhydride

$meta$-dinitrobenzene

$ortho$-dinitrobenzene

$para$-dinitrobenzene

1, 3, 5-trinitrobenzene