JEE Main Β· Chemistry
Carbonyl compounds and carboxylic acids
24 practice questions, each with the answer and an explanation.
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Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.
All 24 questions
- Which of the following carbonyl compounds is the most reactive toward nucleophilic addition reactions?
- In the self-aldol condensation of ethanal (acetaldehyde) catalyzed by dilute aqueous followed by heating, what is the final dehydrated organic product?
- When benzaldehyde is heated with concentrated () aqueous (Cannizzaro reaction), which pair of products is formed?
- Which of the following reagent systems is utilized in the Clemmensen reduction to reduce an aldehyde or ketone directly to the corresponding alkane?
- Which of the following compounds does NOT reduce Tollens' reagent () to produce a silver mirror?
- What is the correct order of DECREASING acidic strength for the following substituted acetic acids?
- The Hell-Volhard-Zelinsky (HVZ) reaction is used for the selective -halogenation of carboxylic acids. What is the required reagent combination?
- Which of the following carboxylic acid derivatives undergoes nucleophilic acyl substitution (hydrolysis) with the FASTEST rate?
- What is the product of the cross-Cannizzaro reaction between benzaldehyde and an excess of formaldehyde in the presence of concentrated ?
- In the Fischer esterification of ethanoic acid with methanol in the presence of concentrated sulfuric acid catalyst, isotopic labeling with oxygen-18 () demonstrates that the laβ¦
- Which of the following compounds produces a yellow crystalline precipitate when treated with iodine and aqueous sodium hydroxide (positive iodoform test)?
- Why is ortho-nitrobenzoic acid significantly more acidic than both para-nitrobenzoic acid and benzoic acid (ortho effect)?
- What is the organic product formed when benzaldehyde is treated with semicarbazide hydrochloride () in the presence of sodium acetate buffer?
- Which of the following reagents selectively oxidizes a primary alcohol to an aldehyde without further over-oxidation to a carboxylic acid?
- The reaction of an aldehyde with sodium bisulfite () produces a crystalline bisulfite addition compound. What is the key synthetic utility of this reaction?
- What is the IUPAC name for the dicarboxylic acid commonly known as succinic acid ()?
- Which of the following compounds undergoes the Wolff-Kishner reduction under strongly basic conditions to yield propane?
- In the reaction of an aldehyde with hydroxylamine (), what type of organic derivative is formed?
- Why does methanoic acid (formic acid, ) reduce Tollens' reagent and Fehling's solution, unlike all other carboxylic acids?
- What is the primary organic product formed when benzaldehyde is treated with hydrogen cyanide () in the presence of catalytic potassium cyanide?
- When calcium ethanoate (calcium acetate, ) is subjected to dry distillation, which carbonyl compound is obtained?
- Which of the following compounds undergoes rapid decarboxylation (loss of ) simply upon gentle heating above ?
- What is the major organic product formed when acetyl chloride is reacted with benzene in the presence of anhydrous aluminium chloride (Friedel-Crafts acylation)?
- Which of the following compounds has the lowest value (is the strongest acid in aqueous solution)?