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Aldehyde AND Ketone formulas

Master Aldehyde AND Ketone through 12 JEE Advanced-level formulas, systematically structured with every variable spelled out. Revise concept-wise, identify the areas where you need improvement, and focus your preparation with greater precision.

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Aldehyde AND Ketone, every formula

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Aldehyde group
$- C H O$
Q1MCQAldehyde group
The functional group of an aldehyde is:
- A
  $-CHO$
- B
  >C=O
- C
  $-COOH$
- D
  $-OH$
Ketone group
$> C = O$
Q1MCQKetone group
The functional group of a ketone is:
- A
  >C=O between two carbons
- B
  $-CHO$
- C
  $-COOH$
- D
  $-OH$
Nucleophilic addition
$characteristic reaction of carbonyls$
Q1MCQNucleophilic addition
The characteristic reaction of carbonyl compounds is:
- A
  nucleophilic addition
- B
  electrophilic substitution
- C
  free-radical addition
- D
  elimination
Reactivity (aldehyde vs ketone)
$aldehyde > ketone$
Q1MCQReactivity
Toward nucleophilic addition, aldehydes are:
- A
  more reactive than ketones
- B
  less reactive
- C
  equally reactive
- D
  unreactive
Tollens' test
$silver mirror (aldehydes)$
Q1MCQTollens
Tollens' reagent gives a silver mirror with:
- A
  aldehydes
- B
  ketones
- C
  alcohols
- D
  ethers
Fehling's test
$red C u_{2} O (aliphatic aldehydes)$
Q1MCQFehling
Fehling's solution gives a red precipitate with:
- A
  aliphatic aldehydes
- B
  aromatic aldehydes
- C
  ketones
- D
  alcohols
Aldol condensation
$α-H containing carbonyls$
Q1MCQAldol
The aldol condensation requires the carbonyl to have:
- A
  an α-hydrogen
- B
  no α-hydrogen
- C
  a halogen
- D
  a ring
Cannizzaro reaction
$no α-H, disproportionation$
Q1MCQCannizzaro
The Cannizzaro reaction occurs with carbonyls that have:
- A
  no α-hydrogen
- B
  an α-hydrogen
- C
  a double bond
- D
  a ring
Reduction to alcohol
$carbonyl + H_{2} \to alcohol$
Q1MCQReduction
Reduction of a carbonyl compound gives a(n):
- A
  alcohol
- B
  alkane
- C
  acid
- D
  ether
Haloform reaction
$methyl ketones give C H X_{3}$
Q1MCQHaloform
Methyl ketones on the haloform reaction give:
- A
  $CHX_3$
- B
  an alcohol
- C
  an ester
- D
  an alkane
Iodoform test
$yellow ppt for C H_{3} C O - group$
Q1MCQIodoform
The iodoform test is positive for compounds having a:
- A
  $CH_3CO$- group
- B
  $-COOH$ group
- C
  $-NH_2$ group
- D
  $-OR$ group
Clemmensen reduction
$\to alkane (Zn-Hg/HCl)$
Q1MCQClemmensen
Clemmensen reduction converts a carbonyl into a(n):
- A
  alkane
- B
  alcohol
- C
  acid
- D
  amine

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Aldehyde AND Ketone formulas

Aldehyde AND Ketone, every formula

Aldehyde group

Ketone group

Nucleophilic addition

Reactivity (aldehyde vs ketone)

Tollens' test

Fehling's test

Aldol condensation

Cannizzaro reaction

Reduction to alcohol

Haloform reaction

Iodoform test

Clemmensen reduction

More JEE Advanced Chemistry formula sheets

Other ways to revise this chapter

Preparing students for India’s top institutes

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