The organic acid that does not has COOH group is___________________?
Correct answer: B. carbolic acid
- A. phthalic acid
- B. carbolic acid
- C. Maleic acid
- D. Succinic acid
Explanation
Carbolic acid is the common name of phenol, C6H5OH, which has a hydroxyl group directly attached to benzene rather than a -COOH group. Phthalic, maleic and succinic acids all contain carboxyl groups. The likely mistake is choosing phthalic acid because its name resembles a familiar aromatic compound, but it is actually a dicarboxylic acid.
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About Phenols
Phenols contain a hydroxyl group directly bonded to an aromatic ring, making them more acidic than alcohols because the phenoxide ion is resonance-stabilised. Reactions include ionisation with bases, electrophilic substitution, bromination, nitration and oxidation, with attention to the difference between phenols and aliphatic alcohols.
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535 free Alcohols and Phenols MCQs from Chemistry, each with the correct answer and an explanation. Unlimited attempts, no account needed.
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