Practice free Aldehyde ketones & carboxylic Acid (Chemistry) NEET multiple-choice questions online with instant answers and detailed explanations. No login required.
In the common naming system for aldehydes, how is the $\alpha$-carbon defined?
In common names, the $\alpha$-carbon being the one directly linked to the aldehyde group, $\beta$-carbon the next, and so on. (NCERT, p. 228)
What is the IUPAC name for $(CH_3)_2CHCHO$?
As per Table 8.1, the IUPAC name for $(CH_3)_2CHCHO$ (Isobutyraldehyde) is 2-Methylpropanal. (NCERT, p. 230)
Which of the following compounds has the common name Mesityl oxide?
Table 8.1 lists $(CH_3)_2C=CHCOCH_3$ as Mesityl oxide, with the IUPAC name 4-Methylpent-3-en-2-one. (NCERT, p. 230)
What is the IUPAC name for Acrolein?
According to Table 8.1, the IUPAC name for Acrolein ($CH_2=CHCHO$) is Prop-2-enal. (NCERT, p. 230)
For cyclic ketones, where does the numbering of the carbon atoms begin in IUPAC nomenclature?
The same applies to cyclic ketones, where the carbonyl carbon is numbered one. (NCERT, p. 229)
Which of the following is the IUPAC name for $CH_3COCH_2CH_2CH_3$?
As seen in Table 8.1, the common name Methyl n-propyl ketone corresponds to the IUPAC name Pentan-2-one. (NCERT, p. 230)
How are substituents commonly indicated in common names of ketones?
The locations of substituents in common names of ketones are indicated by Greek letters, $\alpha, \alpha', \beta, \beta'$ and so on beginning with the carbon atoms next to the carbonyl group, indicated as $\alpha\alpha'$. (NCERT, p. 229)
What is the common name for $HCHO$?
Table 8.1 explicitly states that the common name for HCHO is Formaldehyde. (NCERT, p. 230)
Consider compounds with an aldehyde group attached to a benzene ring. If it is m-bromobenzaldehyde, what is its IUPAC name?
The example given in the text states that m-Bromobenzaldehyde has the IUPAC name 3-Bromobenzaldehyde (or 3-Bromobenzenecarbaldehyde). (NCERT, p. 230)
When naming ketones using IUPAC rules, how is the numbering of the carbon chain determined?
In case of ketones, the numbering begins from the end nearer to the carbonyl group. (NCERT, p. 229)
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