1
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0

Identify X and Y formed in the following two reactions.

(i) Decan-1-ol $\xrightarrow{\text { Jones reagent }} \mathrm{X}$

(ii). Sodium salt of $\mathrm{X} \xrightarrow{\mathrm{NaOH} / \mathrm{CaO}, \Delta} \mathrm{Y}$

A
A. $\mathrm{X}=$ Decanoic acid $\mathrm{Y}=$ Nonane
B
$\mathrm{X}=$ Octanoic acid $\mathrm{Y}=$ Heptane.
C
$X=1-$ Methoxy nonane $\mathrm{Y}=$ Octane.
D
$X=$ Decan-2-one $\mathrm{Y}=$ Octane.
2
COMEDK 2025 Afternoon Shift
MCQ (Single Correct Answer)
+1
-0
Choose the incorrect statement from the following.
A
Acetic acid on reaction with HI and red P at 473 K gives iodoethane
B
Acetic acid is a weaker acid than formic acid
C
Acetic acid gives effervescence with aqueous $\mathrm{NaHCO}_3$ solution
D
Acetic acid does not reduce Fehling's solution
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0
An organic compound $[\mathrm{X}]$ reacts with $\mathrm{H}_2 / \mathrm{Pd}-\mathrm{BaSO}_4$ to give compound $[\mathrm{Y}]$ which reduces Tollen's reagent and undergoes Cannizzaro's reaction. On rigorous oxidation of $[\mathrm{Y}]$ in presence of $\mathrm{KMnO}_4 / \mathrm{H}^{+}$Phthalic acid is the product obtained. What is $[\mathrm{X}]$ ?
A
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 5 English Option 1
B
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 5 English Option 2
C
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 5 English Option 3
D
COMEDK 2025 Morning Shift Chemistry - Carboxylic Acids and Its Derivatives Question 5 English Option 4
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two statements, one Assertion (A) and the other Reason (R) are given. Choose the correct option.

Assertion: 2-aminoethanoic acid and p-aminobenzene sulphonic acid can exist as Zwitter ions while p-aminobenzoic acid cannot.

Reason: When the acid group is a relatively strong proton donor and the $-\mathrm{NH}_2$ group is sufficiently basic it can accept a $\mathrm{H}^{+}$ion from the acid group to form the dipolar ion.

A
Both A and R are correct and R is the correct explanation of A .
B
A is correct but R is wrong.
C
A is wrong but R is correct.
D
Both A and R are correct but R is not the correct explanation of A .
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