Class 12 Chemistry Carboxylic Acid and its Derivatives Notes and Important Questions
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Notes for Class 12 Carboxylic Acid and its Derivatives (Chemistry) are shown above.
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Important Questions
An organic compound has two functional isomers A and B. Isomer A changes blue litmus into red and B has fruity smell.
Give the reaction for the formation of $A$ by using Grignard's reagent.
Convert the isomer $A$ into isomer $B$?
Write a suitable test reaction to distinguish $A$ from methanoic acid.
Arrange the following in the decreasing order of their acidic strength and give reason for your answer:
$\text{CH}_3\text{COOH},\ \text{ClCH}_2\text{COOH},\ \text{FCH}_2\text{COOH}, \ \text{C}_6\text{H}_5\text{COOH}$ $(2)$
Amines are formally derivatives of ammonia, wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group which may respectively be called alkyl amines and aryl amines.
Give a test to distinguish alkyl amine and aryl amine.
How can you separate ethylamine and dimethylamine present in mixture by Hoffmann’s method?
Arrange the following amines in terms of increasing order of basic strength:
Propyl amine, ethyl methylamine, trimethylamine.
Convert: ethanamine to methanamine
An aliphatic compound (A) reacts with SOCI to give (B). The compound (B) is heated with ammonia to produce (C). The compound (C) is further heated with Br /KOH to yield (D). The compound (D) gives (E) when treated with NaNO /HCI at low temperature. The compound (E) is a primary alcohol which gives positive iodoform test. Identify compounds (A) to (E) with the reactions involved.
The list of organic compounds is given as follows:
propanoic acid, ethanol, ethanamine, chloroethane, propanamide
Prepare the correct sequence giving suitable conditions/reagents.
Which of the following reagents can be used to distinguish between a phenol and a carboxylic acid?
$\text{KOH}$
$\text{Na}$
$\text{NaOH}$
Which of the following reagent converts carboxylic acid to anhydride?
P₂O₅
CaO
LiAlH₄
Na/C₂H₅OH
A compound 'Z' with molecular formula C₃H₄O₄ is heated to produce compound 'Y' and CO₂ gas. Heating of 'Y' with P₂O₅ forms compound 'X' and a water molecule. Identify the compound 'X'.
Ethanoic acid
Ethanoic anhydride
Methanoic anhydride
Ethanal
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Past Question Analysis
Historical exam-pattern data from past NEB question papers — not a prediction of future questions.
1
Question Items
1
Total Marks
1
Papers Appeared In
| Year | Question Items | Marks |
|---|---|---|
| 2082 | 1 | 1 |
Also appears in 4 model questions (not counted above — model sets aren't actual NEB exam history).
Offered as one of multiple alternative ("OR") questions in 1 past paper — not counted above, since a different chapter's question could be chosen instead.
This chapter explores carboxylic acids and compounds derived from them. It covers their preparation, physical and chemical properties, acidic strength and important reactions. Students also study acid halides, amides, esters and anhydrides, including their preparation, reactions and relative reactivity.
This page covers Carboxylic Acid and its Derivatives, chapter 15 of 22 in the Class 12 Chemistry syllabus set by the National Examination Board (NEB). 6 important questions for this chapter are available, each with a full solution.
For numerical and derivation-based chapters like this one, working through past NEB questions is usually more useful than re-reading notes alone — try solving each important question above before checking the solution, then compare your working step by step.