Which of the following is a hydrocarbon?

Which of the following compounds is most reactive towards electrophilic nitration?

Assertion : Tropylium cation is aromatic in nature.
Reason : The only property that determines its aromatic behaviour is its planar structure.

Identify the final product $C$ in the following reaction sequence:
$1,3-\text{cyclohexadiene}$ $\xrightarrow{NBS} A$ $\xrightarrow{Aq. NaOH} B$ $\xrightarrow{Con. H_2SO_4, \Delta} C$

Which among the following sources contains caryophyllene?

Identify the position where electrophilic aromatic substitution $(EAS)$ is most favourable.