PREVIOUS NEXT
1
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Identify the wrong statement from the following

A

$\mathrm{S}_{\mathrm{N}} 1$ reaction of Alkyl halides is favoured by the presence of bulky substituents, protic solvents and the reaction products are a racemic mixture

B

Vinyl halides do not undergo nucleophilic substitution reaction easily c.

C

The product formed when (-)-2-Methylbutan-1-OI is heated with Conc. HCl is (+)-1-Chloro-2-methylbutane with Retention of configuration

D

$\mathrm{S}_{\mathrm{N}} 2$ reaction of optically active halides are accompanied by Retention of configuration

2
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Select the reagents needed to convert Benzene to 4-Bromophenylpropene in the correct sequential order.

(A). $\mathrm{Cl}_2 / \Delta$

(B). $\left(\mathrm{CH}_3\right)_2-\mathrm{CHCl}$ /anhyd. $\mathrm{AlCl}_3$

(C). Alc. KOH

(D). $\mathrm{Br}_2 / \mathrm{Fe}$

A

D, A, C, B

B

D, C, A, B

C

A, C, B, D

D

B, D, A, C

3
COMEDK 2026 Morning Shift
MCQ (Single Correct Answer)
+1
-0

Two statements, Assertion and Reason are given. With reference to them, choose the correct option.

Assertion: Hydrolysis of 2-Bromo-2-methylpropane follows $S_N 1$ mechanism which involves 2 steps and the first step is:

COMEDK 2026 Morning Shift Chemistry - Haloalkanes and Haloarenes Question 2 English

Reason: The energy required to cleave $\mathrm{C}-\mathrm{Br}$ is taken from the energy released due to Inductive effect and hyper-conjugative effect.

A

Assertion is correct but Reason is wrong

B

Reason is correct but Assertion is wrong

C

Both Assertion and Reason are correct but Reason is not the correct explanation of Assertion

D

Both Assertion and Reason are correct and Reason is the correct explanation of Assertion

4
COMEDK 2025 Evening Shift
MCQ (Single Correct Answer)
+1
-0
The correct order of reactivity of halogens with alkanes is :
A
$\mathrm{F}_2>\mathrm{Cl}_2>\mathrm{Br}_2>\mathrm{I}_2$
B
$\mathrm{F}_2>\mathrm{Br}_2>\mathrm{Cl}_2>\mathrm{I}_2$
C
$\mathrm{Cl}_2>\mathrm{F}_2>\mathrm{Br}_2>\mathrm{I}_2$
D
$\mathrm{I_2>B r_2>C l_2>F_2}$
PREVIOUS NEXT

COMEDK Subjects

Browse all chapters by subject

Physics
Mechanics
Units & Measurements Vector Algebra Motion Laws of Motion Circular Motion Work, Energy and Power Center of Mass and Collision Rotational Motion Elasticity Fluid Mechanics Heat and Thermodynamics Gravitation Simple Harmonic Motion Waves
Optics
Ray Optics Wave Optics
Electromagnetism
Moving Charges and Magnetism Electromagnetic Waves Capacitor Magnetism and Matter Current Electricity Alternating Current Electrostatics Electromagnetic Induction
Modern Physics
Dual Nature of Radiation Atoms and Nuclei Semiconductor Devices and Logic Gates Communication Systems
Chemistry
Physical Chemistry
Some Basic Concepts of Chemistry Atomic Structure States of Matter Thermodynamics Chemical Equilibrium Ionic Equilibrium Liquid Solution Redox Reactions Surface Chemistry Solid State Electrochemistry Chemical Kinetics Nuclear Chemistry
Inorganic Chemistry
Metallurgy Periodic Table and Periodicity Hydrogen and It's Compounds p-Block Elements Environmental Chemistry Coordination Compounds d and f Block Elements s-Block Elements Chemical Bonding and Molecular Structure
Organic Chemistry
IUPAC Nomenclatures General Organic Chemistry Isomerism Hydrocarbons Haloalkanes and Haloarenes Alcohol, Phenols and Ethers Aldehyde and Ketone Carboxylic Acids and Its Derivatives Compounds Containing Nitrogen Polymers Biomolecules Chemistry in Everyday Life Practical Organic Chemistry
Mathematics
Algebra
Sets and Relations Logarithms Complex Numbers Quadratic Equations Sequences and Series Permutations and Combinations Probability Binomial Theorem Vector Algebra Three Dimensional Geometry Matrices and Determinants Statistics Mathematical Reasoning Linear Programming
Trigonometry
Trigonometric Ratios & Identities Trigonometric Equations Properties of Triangles Inverse Trigonometric Functions
Coordinate Geometry
Hyperbola Ellipse Straight Lines and Pair of Straight Lines Circle Parabola
Calculus
Application of Derivatives Differential Equations Indefinite Integration Limits, Continuity and Differentiability Differentiation Functions Definite Integration Area Under The Curves
EXAM MAP

Browse past year questions by exam & subject

Joint Entrance Examination
JEE Main JEE Advanced MHT CET BITSAT COMEDK WB JEE KCET VITEEE AP EAPCET TS EAMCET IAT (IISER)
Medical
NEET AIIMS MHT CET (Biology)
Graduate Aptitude Test in Engineering
GATE CSE GATE ECE GATE EE GATE ME GATE CE GATE PI GATE IN GATE Data Science and Artificial Intelligence
Civil Services
UPSC Civil Service
Defence
NDA
Staff Selection Commission
SSC CGL Tier I
CBSE
Class 12