16 public questions tagged with this topic.
Ketones do not react with Tollens' reagent, while aldehydes do. Acetone is a ketone and will not give a silver mirror test. This follows from NCERT principle where relation explains outcome clearly for students.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom, Periodicity and relevant Chemistry topic, Topic: Mole concept and periodic trends.
The carbon in the -COOH group (carbon 3) forms a double bond with O and single bonds with O and C, indicating sp² hybridization. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.
Ref: NCERT Chemistry Textbook - Latest Edition for Academic Session 2026-27 (Rationalized Textbook for Class XI and XII), Chapter: Chemical Bonding (Latest NCERT 2026-27), Topic: Hybridization of nitrogen in CH₃NH₂, sp³ hybridization and pyramidal geometry
Both have the formula C₃H₈O but differ in functional groups (ether vs. alcohol), indicating functional isomerism. This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom and Periodicity, Topic: Mole concept, atomic models and periodic trends.
Carboxylic acids can be reduced to primary alcohols using lithium aluminium hydride (LiAlHâ‚„). This follows from NCERT principle where the relation explains the outcome clearly for students in simple steps.
Ref: NCERT Chemistry Textbook for Class XI and XII, Chapter: Some Basic Concepts, Structure of Atom and Periodicity, Topic: Mole concept, atomic models and periodic trends.
Fructose is a ketohexose with 6 carbons like glucose (an aldohexose), but it has a ketone group instead of an aldehyde.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Carbohydrates - Monosaccharides - Structure and Properties
Glucose, an aldohexose, has an aldehyde group (-CHO) at C1 in its open chain form.
Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Carbohydrates - Monosaccharides - Structure and Properties
A benzylic alcohol has the -OH group on a carbon directly attached to a benzene ring. C₆H₅CH₂OH (benzyl alcohol) fits this definition.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Phenols and Ethers and Uses
An allylic alcohol has the -OH group on a carbon adjacent to a double bond. CH₂=CH-CH₂OH (allyl alcohol) fits this definition.
Ref: NCERT Class 12 Chemistry > Chapter 7: Alcohols, Phenols and Ethers > Topic: Chemical Reactions of Alcohols - Dehydration Oxidation Esterification
A tertiary halide has the halogen on a carbon bonded to three other carbons. CH₃CH₂C(CH₃)2Cl (2-chloro-2-methylbutane) is tertiary.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Polyhalogen Compounds - Chloroform Iodoform DDT Freons
A vicinal dihalide has halogens on adjacent carbons. CH₃CHBrCH₂Br (1,2-dibromopropane) is a vicinal dihalide.
Ref: NCERT Class 12 Chemistry > Chapter 6: Haloalkanes and Haloarenes > Topic: Polyhalogen Compounds - Chloroform Iodoform DDT Freons
CH₃CH₂CH₂CHO (butanal, aldehyde) fits C₄H₈O, has a carbonyl, and no halogens, consistent with a negative Lassaigne’s test.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Fundamental Concepts - Reaction Mechanism - Fission and Reaction Intermediates
Degree of unsaturation = (2C + 2 - H)/2 = (12 - 8)/2 = 2. CH₃CH₂C≡CCH₃ has one triple bond (2 units), fitting C₅H₈.
Ref: NCERT Class 11 Chemistry > Chapter 8: Organic Chemistry - Some Basic Principles and Techniques > Topic: Electronic Effects - Inductive Mesomeric Hyperconjugation and Resonance
