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

Arrange the following in the decreasing order of their $\mathrm{pK}_{\mathrm{a}}$ values.

COMEDK 2025 Morning Shift Chemistry - General Organic Chemistry Question 2 English

A
$\mathrm{A}>\mathrm{C}>\mathrm{D}>\mathrm{B}$
B
$\mathrm{C}>\mathrm{A}>\mathrm{B}>\mathrm{D}$
C
$\mathrm{B}>\mathrm{D}>\mathrm{C}>\mathrm{A}$
D
$\mathrm{D}>\mathrm{C}>\mathrm{A}>\mathrm{B}$
2
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Cyclohexanol undergoes a series of reactions as given. Identify compound (iv).

$\mathrm{C}_6 \mathrm{H}_{11} \mathrm{OH}+\mathrm{CrO}_3 \rightarrow(\mathrm{i})+\mathrm{C}_6 \mathrm{H}_5 \mathrm{MgI} \rightarrow(\mathrm{ii})+$ dil. $\mathrm{HCl} \rightarrow(\mathrm{iii})+$ Conc. $\mathrm{H}_3 \mathrm{PO}_4 \rightarrow(\mathrm{iv})$

A
COMEDK 2025 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 1
B
COMEDK 2025 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 2
C
COMEDK 2025 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 3
D
COMEDK 2025 Morning Shift Chemistry - Alcohol, Phenols and Ethers Question 2 English Option 4
3
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Match the structures in Column I with their correct IUPAC names given in Column II.

Column I Column II
A. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 1 P. 2,3-Dibromo-1-phenylpentane.
B. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 2 Q. 2,3- Dibromohexanedial.
C. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 3 R. 2- ( 4- isobutylphenyl) propanoic acid
D. COMEDK 2025 Morning Shift Chemistry - IUPAC Nomenclatures Question 1 English 4 S. 2- Hydroxy-1,2,3- propanetricarboxylic acid.

A
$\mathrm{A}=\mathrm{Q} \quad \mathrm{B}=\mathrm{P} \quad \mathrm{C}=\mathrm{S} \quad \mathrm{D}=\mathrm{R}$
B
$\mathrm{A}=\mathrm{R} \quad \mathrm{B}=\mathrm{S} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P}$
C
$\mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{R} \quad \mathrm{C}=\mathrm{Q} \quad \mathrm{D}=\mathrm{P}$
D
$\mathrm{A}=\mathrm{S} \quad \mathrm{B}=\mathrm{R} \quad \mathrm{C}=\mathrm{P} \quad \mathrm{D}=\mathrm{Q}$
4
COMEDK 2025 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify $[\mathrm{X}]$, the final product formed when 2 moles of Ethanal undergoes the following series of reactions with reagents [(i) to (iv)]

COMEDK 2025 Morning Shift Chemistry - Aldehyde and Ketone Question 1 English

A
But-3-enoic acid
B
But-2-enoic acid
C
Propanoic acid
D
Ethanoic acid
EXAM MAP
Medical
NEETAIIMS
Graduate Aptitude Test in Engineering
GATE CSEGATE ECEGATE EEGATE MEGATE CEGATE PIGATE IN
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12