Which of the following is NOT a correct statement about Friedel-Crafts acylation reaction of benzene?

An unknown compound C9H12 gave the following NMR spectrumTriplet at 1.21 ppm (3H), Singlet at 2.30 ppm (3H), Quartet at 2.6 ppm (2H), Singlet at 7.04 ppm (4H).  What is the structure of the compound ?

Which compounds have the lone pair on nitrogen atom in a p orbital?

NMR of carboxylic acids usually shows presence of -OH group as   

What happens when

When nitrobenzene is subjected to Friedel Crafts alkylation using methyl chloride and AlCl3, the products are

Mark all that apply: which of the following combinations will not afford for a Friedel craft product

What is the transition state when benzene reacts with an electrophile ?  

benzene has bp of 80oC, toluene has bp of 110 oC and xylene has boiling point of 130 oC. The GC of a mixture of these three compounds should show retention times as

Classify the following compounds as aromatic, anti-aromatic or non-aromatic.