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

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

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

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

For mono-substituted benzenes, the position which holds the substitution/functional groups is called

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