1a. The pi bond in benzene reacts with a ____ to form a ____intermediate. This intermediate undergoes a ___ reaction to formthe substituted benzene. nucleophile electrophile radicalcarbocation carbanion substitution elimination acid-base 1b.Benzene reacts with HNO3/H2SO4 to form: benzene sulfonic acidnitrobenzene no reaction 1c. Benzene reacts with1-chloropropane/AlCl3 to form: chlorobenzene propylbenzeneisopropylbenzene (also called cumene) 1d. Benzene reacts withacetyl chloride (CH3COCl)/AlCl3 to form: chlorobenzene acetophenone(also called methylphenylketone) ethylbenzene 1e. Styrene reactswith HBr/peroxides to produce Compound A. Compound A reacts withCH3MgBr to make ____.