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The reactions, Q to R and R to S , are
- Friedel-Craft alkylation and Friedel-Craft acylation
- Friedel-Craft alkylation, dehydration and Friedel-Craft acylation
- Dehydration and Friedel-Craft acylation
- Aromatic sulfonation and Friedel-Craft acylation
Correct answer: Friedel-Craft alkylation, dehydration and Friedel-Craft acylation
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