List of top Chemistry Questions on Nucleophilic and electrophilic substitution reactions (both aromatic and aliphatic) asked in Assam CEE

In which of the following compounds, an electrophile prefers to attack the meta position?
The main product formed in the following reaction is: \[ CH_3 - CH_2 - CH = CH_2 + HBr \longrightarrow \]
The most effective reaction for the synthesis of 1-methoxy-4-nitrobenzene is: