NEET UG Aldehydes, Ketones and Carboxylic Acids — practice questions — page 6

Explore 151 free Aldehydes, Ketones and Carboxylic Acids questions in NEET UG Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

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Aldehydes, Ketones and Carboxylic Acids questions and exercises with answers

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The IUPAC name of the simplest aldehyde, $\mathrm{HCHO}$, isRead the answer and worked solution →

Worked practice questions

The IUPAC name of the simplest aldehyde, $\mathrm{HCHO}$, is

methanal
methanol
methanoic acid
ethanal

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Correct answer: A. methanal

1. Your syllabus: the IUPAC name of an aldehyde is formed by replacing the '-e' of the parent alkane with '-al'. 2. $\mathrm{HCHO}$ has ONE carbon atom (the parent alkane is methane). Adding the '-al' suffix gives METHANAL. 3. Common name: formaldehyde. 4. Distractors: methanol (option B) is $\mathrm{CH_3OH}$, an alcohol. Methanoic acid (option C) is $\mathrm{HCOOH}$, the carboxylic acid form. Ethanal (option D) is $\mathrm{CH_3CHO}$, the TWO-carbon aldehyde. _Source: syllabus Chemistry Part 2, Ch 8 "Aldehydes, Ketones and Carboxylic Acids", §8.1.1 (Nomenclature, IUPAC rules), p. 1–2._

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