Q58.With dehydrating agent present which dicarboxylic acid is least reactive towards forming an anhydride? JEE Main 2019 (10 Jan Shift 1) JEE Main Previous Year Paper (1) (2) (3) (4)
What This Question Tests
This question probes the reactivity of dicarboxylic acids towards anhydride formation, which is dictated by the stability of the resulting cyclic anhydride ring, specifically related to ring strain.
Concepts Tested
📚 NCERT Sections This Tests
7.7 — Predict The Major Product Of Acid Catalysed Dehydration Of
Chemistry Class 12 · Chapter 7
7.7 Predict the major product of acid catalysed dehydration of (i) 1-methylcyclohexanol and (ii) butan-1-ol
8.5 — Draw Structures Of The Following Derivatives.
Chemistry Class 12 · Chapter 8
8.5 Draw structures of the following derivatives. (i) The 2,4-dinitrophenylhydrazone of benzaldehyde (ii) Cyclopropanone oxime (iii) Acetaldehydedimethylacetal (iv) The semicarbazone of cyclobutanone (v) The ethylene ketal of hexan-3-one (vi) The methyl hemiacetal of formaldehyde 255 Aldehydes, Ketones and Carboxylic Acids Reprint 2025-26
8.18 — Give Plausible Explanation For Each Of The Following:
Chemistry Class 12 · Chapter 8
8.18 Give plausible explanation for each of the following: (i) Cyclohexanone forms cyanohydrin in good yield but 2,2,6-trimethylcyclo- hexanone does not. (ii) There are two –NH2 groups in semicarbazide. However, only one is involved in the formation of semicarbazones. (iii) During the preparation of esters from a carboxylic acid and an alcohol in the presence of an acid catalyst, the water or the ester should be removed as soon as it is formed.
📋 Question Details
- Chapter
- Aldehydes Ketones Carboxylic Acids
- Topic
- Anhydride Formation
- Year
- 2019
- Shift
- 10 Jan Shift 1
- Q Number
- Q58
- Type
- MCQ
- NCERT Ref
- Class 12 Chemistry Ch 12: Aldehydes, Ketones and Carboxylic Acids
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