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Which test detects the carboxyl group by evolving CO2?
AAdding NaHCO3 solution
BTreating with neutral FeCl3
CAdding Tollens' reagent
DAdding 2,4-DNP solution
Answer & Solution
Correct answer: A. Adding NaHCO3 solution
Carboxylic acids are strong enough to release CO2 from carbonates and hydrogencarbonates, which phenols and alcohols cannot.
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