List of top Chemistry Questions on Aldehydes, Ketones and Carboxylic Acids asked in COMEDK UGET

Identify reagents [A] and [B] in the following reactions of Salicylic acid.
Match the reactions in List I with the final products formed as given in List II.
Which of the following gives a Silver mirror test positively with Tollen's reagent?
An organic compound [X] (Molecular formula \( C_6H_{12}O_2 \)) reacts with dil. \( H_2SO_4 \) to form an alcohol [B] and a carboxylic acid [C]. Reaction of compound [B] with Jones reagent yielded compound [C]. When compound [C] was heated with \( P_2O_5 \) an Anhydride was formed. Compound [X] is --------
Match the reactions in Column I with the correct products given in Column II.

Identify X and Y formed in the following two reactions.
\[ (i) \, \text{Decan-1-ol} \xrightarrow{\text{Jones reagent}} X \]
\[ (ii) \, \text{Sodium salt of X} \xrightarrow{\text{NaOH/CaO,} \Delta} Y \]
Identify X, the final product formed when 2 moles of ethanal undergoes the following series of reactions with reagents (i) to (iv).
\[ \mathrm{CH_3CHO \xrightarrow[(ii)\ HCl]{(i)\ dil.\ NaOH} \xrightarrow{(iii)\ NaBH_4} \xrightarrow{(iv)\ Cr_2O_7^{2-}/H^+}{} [X]} \]
An organic compound [X] reacts with \(H_2/Pd-BaSO_4\) to give compound [Y], which reduces Tollens' reagent and undergoes Cannizzaro's reaction. On rigorous oxidation of [Y] in presence of \(KMnO_4/H^+\), phthalic acid is the product obtained. What is [X]?
Two statements, one Assertion (A) and the other Reason (R) are given. Choose the correct option. Assertion: Compound \([X]\) reacts with hydrazine in presence of \(KOH/Glycol\) to form the product \([Y]\). Reason: Reduction reaction occurs and carbonyl group is reduced to methylene group.
X and Y in the following reactions are:
(CH3–CH2)2C=O → HCN/KCN → X → LiAlH4 → (CH3)2C(OH)CH2NH2
What can be A and B in the following reaction?

Identify the product formed in the given reaction. 

Find the product formed for the given reaction.
\[ C_6H_5CHO + H_3C-CH_2CHO \xrightarrow{\text{Dil. NaOH/Δ}} \text{Product} \]
The major product in the given reaction is
Why do ketones and carboxylic acids have higher boiling points as compared to aldehydes?
Find the final product for the reaction: \[ \text{C}_6\text{H}_5\text{CHO} + \text{CH}_3\text{CO}\text{C}_6\text{H}_5 \xrightarrow{\text{OH}^-, 293 K} \text{Product} \]

What is the product formed when benzene reacts with CO and HCl in presence of anhydrous AlCl\(_3\)? 
 

Consider the acid strength of the carboxylic acids: (i) $ {PhCOOH}$ (ii) $o - { NO_2C_6H_4COOH}$ (iii) $p- {NO_2C_6H_4COOH}$ (iv) $m- {NO_2C_6H_4COOH}$
Among $2$-chloropropanoic acid, $3$-chloropropanoic acid, $2,2$-dichloroacetic acid and propanoic acid the $K_a$ values will be in the order,
Which of the following does not undergo aldol condensation reaction?
Aldol condensation is given by
Rochelle's salt is
Fehling's reagent contains
In the decarboxylation of carboxylic acid the reagent used is
Decarboxylation of an acid can be carried out using