(A) The $IUPAC$ name $3-$methyl$-2-$pentanone indicates a ketone functional group $(C=O)$ at the $C-2$ position of a $5-$carbon chain (pentane). At th

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$CH_3 - CO - CH(CH_3) - CH_2 - CH_3$

(A) The $IUPAC$ name $3-$methyl$-2-$pentanone indicates a ketone functional group $(C=O)$ at the $C-2$ position of a $5-$carbon chain (pentane). At the $C-3$ position,there is a methyl group $(-CH_3)$. Writing the structure: $C^1H_3 - C^2(=O) - C^3H(CH_3) - C^4H_2 - C^5H_3$. This matches the structure in option $A$.

Class 12 Chemistry 1 Aldehydes, Ketones and Carboxylic Acids: Aldehydes and Ketones Introduction

Medium

Which structure represents $3-$methyl$-2-$pentanone?

A
$CH_3 - CO - CH(CH_3) - CH_2 - CH_3$
B
$CH_3 - CH(CH_3) - CH_2 - COOH$
C
$C_2H_5 - CH = C(CH_3) - CH_2 - CH_3$
D
$CH_3 - CH_2 - CH = CH_2$

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Chapter

1 Aldehydes, Ketones and Carboxylic Acids: Aldehydes and Ketones

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Introduction

Which of the following is correctly matched according to their common names?

Difficult

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Which is the main functional group in Acrolein?

EasyGUJCET 2018

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The structures of cinnamaldehyde $(I)$,salicylaldehyde $(II)$,and vanillin $(III)$ are:

EasyAP EAMCET 2019

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Which of the following aldehydes contains two $-CHO$ groups in a molecule?

EasyMHT CET 2026

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Match the $IUPAC$ name of the carbonyl compound in Column-$I$ with its structure in Column-$II$ and its common name in Column-$III$.

Column-$I$ ($IUPAC$ name) Column-$II$ (Structure) Column-$III$ (Common name)

$A. 4$-oxopentanal $i. CH_3CH_2CH_2CH_2CHO$ $p. \text{Acetyl acetone}$

$B. \text{Ethane-}1,2\text{-dial}$ $ii. CH_3COCH_2CH_2CHO$ $q. \text{Valeraldehyde}$

$C. \text{Pentane-}2,4\text{-dione}$ $iii. CHOCHO$ $r. \beta\text{-acetyl propionaldehyde}$

$D. \text{Pentanal}$ $iv. CH_3COCH_2COCH_3$ $s. \text{Glyoxal}$

Column-$I$ ($IUPAC$ name)	Column-$II$ (Structure)	Column-$III$ (Common name)
$A. 4$-oxopentanal	$i. CH_3CH_2CH_2CH_2CHO$	$p. \text{Acetyl acetone}$
$B. \text{Ethane-}1,2\text{-dial}$	$ii. CH_3COCH_2CH_2CHO$	$q. \text{Valeraldehyde}$
$C. \text{Pentane-}2,4\text{-dione}$	$iii. CHOCHO$	$r. \beta\text{-acetyl propionaldehyde}$
$D. \text{Pentanal}$	$iv. CH_3COCH_2COCH_3$	$s. \text{Glyoxal}$