Carboxylic Acids & Derivatives: JEE Main Chemistry Previous Year Questions

181 previous year questions from Carboxylic Acids & Derivatives. Here are the 25 most important ones; open any question for the correct answer and a full step-by-step solution.

1. 1.Consider the reaction : RCHO + NH2NH2 → RCH = N–NH2 What sort of reaction is it ?
2. 2.Which of the following reactions will not form acetaldehyde ?
3. 3.The correct statement regarding a carbonyl compound with a hydrogen atom on its alpha-carbon, is :
4. 4.Carboxylic acids have higher boiling points than aldehydes, ketones and even alcohols of comparable molecularmass. It is due to their :
5. 5.The correct order of acidic strength among the followings is
6. 6.Among the following the strongest acid is
7. 7.Vinegar and butter are the sources for which of the following carboxylic acids respectively?
8. 8.Which one of the following esters gets hydrolysed most easily under alkaline conditions ?
9. 9.…
10. 10.Which of the following compounds is least likely to give effervescence of ${\text{CO}}_2$ in presence of aq. ${\text{NaHCO}}_3$?
11. 11.Which of the following represents the correct order of the acidity in the given compounds
12. 12.An organic compound " P " of molecular formula $C_6{H}_{12}{O}_3$ gives positive Iodoform test but negative Tollen's test. When " P " is treated with dilute acid,…
13. 13.Reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by elimination of water. The reagent is :
14. 14.The reaction that does not give benzoic acid as the major product is
15. 15.Which of the following compounds is most acidic in nature?
16. 16.Which one of the following carbonyl compounds cannot be prepared by addition of water on an alkyne in the presence of${\text{HgSO}}_4$ and $H_{2}S{O}_4$?
17. 17.The correct order of decreasing acid strength of trichloroacetic acid (a), trifluoroacetic acid (b), acetic acid (c) and formic acid (d) is
18. 18.Which one of the following esters cannot undergo Claisen self‐condensation?
19. 19.Which of the following compounds gives benzoic acid on hydrolysis?
20. 20.The major product of the following reaction is : $C{H}_3\text{CH}=\text{CHC}{O}_{2}C{H}_3\text{LiAl}{H}_4$
21. 21.Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R: Assertion A : Acetal/Ketal is stable in basic medium. Reason R : Th…
22. 22.Methyl acetate and ethyl acetate can be distinguished by :
23. 23.Two statements are given below : Statement I: The melting point of monocarboxylic acid with even number of carbon atoms is higher than that of with odd number of carbon a…
24. 24.Which one of the following compounds will react with $NaHC{O}_3$ solution to give sodium salt and carbon dioxide?
25. 25.p-cresol reacts with chloroform in alkaline medium to give the compound A which adds hydrogen cyanide to form, the compound B. The latter on acidic hydrolysis gives chira…