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Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones Concepts for JEE

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Concept explainer

Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones is a core JEE Main Chemistry subtopic under Organic Compounds Containing Oxygen. Master the definitions, standard results, and typical MCQ patterns tested in JEE Main and Advanced.

Key points

  • Understand the definition and scope of Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones in the JEE syllabus
  • Memorise key formulas and standard results linked to Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones
  • Practise 20–40 syllabus-aligned MCQs with step-by-step solutions

JEE tips

  • Revise Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones with a one-page formula sheet before attempting mixed tests
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Students often rush Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones questions without checking units, sign conventions, or boundary conditions — always verify assumptions before calculating.

Syllabus context

Part of Organic Compounds Containing Oxygen in JEE Main Chemistry.

Free sample questions

Attempt 8 free MCQs for Aldehyde and Ketones: Nature of carbonyl group, nucleophilic addition to >C=O group, relative reactivities of aldehydes and ketones. Unlock 28+ more with Pro.

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Q1ChemistryUnit 17: Organic Compounds Containing Oxygen
The given reaction is called: R−C−RN3HU−RCONHR+N2SO4J\mathbf{R}-\mathbf{C}^{-} \mathbf{R} \frac{\mathbf{N}_{3} \mathbf{H}}{\mathbf{U}}-\mathbf{R} \mathbf{C O N H R}+\mathbf{N}_{\mathbf{2} \mathbf{S O}_{\mathbf{4}}}^{\mathbf{J}}
Q2ChemistryUnit 17: Organic Compounds Containing Oxygen
2CH3COCH3→dryHCl\mathbf{2} \boldsymbol{C} \boldsymbol{H}_{3} \boldsymbol{C O C H}_{3} \stackrel{d r y H C l}{\rightarrow} 'X'. X\mathbf{X} is
Q3ChemistryUnit 17: Organic Compounds Containing Oxygen
In which of the following solvent/(s), aldehydes and ketones are soluble?
Q4ChemistryUnit 17: Organic Compounds Containing Oxygen
In the given reaction, the product (B)(B) is CH3CHO(i)NaCN/HCl(ii)H2O/H⊕/Δ(A)Fentonreagent\boldsymbol{C H}_{3} \boldsymbol{C H O} \frac{(i) N a C N / \boldsymbol{H} C l}{(i i) \boldsymbol{H}_{2} \boldsymbol{O} / \boldsymbol{H} \oplus / \boldsymbol{\Delta}}(\boldsymbol{A}) \frac{\boldsymbol{F e n t o n}}{\text {reagent}} (B)(B)
Q5ChemistryUnit 17: Organic Compounds Containing Oxygen
Assertion (A): Aldehydes are one of the constituents of photochemical sinog⁡\operatorname{sinog} Reason (R): Aldehydes are produced by photochemical oxidation of hydrocarbons by ozone.
Q6ChemistryUnit 17: Organic Compounds Containing Oxygen
Which of the following process is responsible for the digestion of fat in out intestine?
Q7ChemistryUnit 17: Organic Compounds Containing Oxygen
Which of the following reagents convert the acid chloride into aldehyde? CH3−CH2−CH2−CO−Cl→\boldsymbol{C H}_{3}-\boldsymbol{C H}_{2}-\boldsymbol{C H}_{2}-\boldsymbol{C O}-\boldsymbol{C l} \rightarrow CH3−CH2−CH2−CHO\boldsymbol{C H}_{3}-\boldsymbol{C H}_{2}-\boldsymbol{C H}_{2}-\boldsymbol{C H O}
Q8ChemistryUnit 17: Organic Compounds Containing Oxygen
Two isomer products are obtained in (C). They are:

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