JEE Main 2026 Jan 23 Shift 1 Question Paper (OUT) with Solution PDF - Download Shift wise Analysis

JEE Main 2026 Jan 23 Shift 1 Question papers with solutions

The links for the unofficial JEE Main 2026 question papers for the Jan 23 shift 1 exam release by Careers360 is now available below:

Memory based questions are given below:

Chemistry

Question 1: The correct order of ionisation energy of $\mathrm{Cl}, \mathrm{S}, \mathrm{P}, \mathrm{Al}, \mathrm{Si}$ is

$1 \quad\mathrm{Cl}>\mathrm{P}>\mathrm{S}>\mathrm{Si}>\mathrm{Al}$
$2 \quad\mathrm{P}>\mathrm{Cl}>\mathrm{S}>\mathrm{Al}>\mathrm{Si}$
$3 \quad\mathrm{Cl}>\mathrm{S}>\mathrm{P}>\mathrm{Si}>\mathrm{Al}$
$4 \quad \mathrm{Cl}>\mathrm{Al}>\mathrm{Si}>\mathrm{P}>\mathrm{S}$

Question 2: Given below are two statements
Statement-I : $\left[\mathrm{CoBr}_4\right]^{2-}$ absorbs lesser energy than $\left[\mathrm{CoCl}_4\right]^{2-}$
Statement-II : $\left[\mathrm{CoCl}_4\right]^{2-}$ has higher crystal field splitting energy then $\left[\mathrm{CoBr}_4\right]^{2-}$

1 Both S-I and S-II are correct

2 Both S-I and S-II are incorrect

3 S-I is correct and S-II are incorrect

4 S-I is incorrect and S-II are correct

Question 3: In the reaction sequence, what is the mass (in grams) of product (C) formed?

Question 4: Which of the following undergo nitration at fastest rate?
$1\quad \mathrm{C}_6 \mathrm{H}_5 \mathrm{NO}_2$
$2 \quad \mathrm{C}_6 \mathrm{H}_5 \mathrm{CH}_3$
$3 \quad \mathrm{C}_6 \mathrm{H}_5 \mathrm{COOH}$
$4 \quad \mathrm{C}_6 \mathrm{H}_5 \mathrm{Br}$

Question 5: For the following change,

$\underset{5^{\circ} \mathrm{C}}{\mathrm{H}_2 \mathrm{O}(\ell)} \rightarrow \underset{100^{\circ} \mathrm{C}}{\mathrm{H}_2 \mathrm{O}(\mathrm{~g})}$
Select the correct answer:

1 q = +ve, w = +ve, $\Delta H=+v e$
$2 \quad\mathrm{q}=-\mathrm{ve}, \mathrm{w}=-\mathrm{ve}, \Delta \mathrm{H}=+\mathrm{ve}$
$3 \quad\mathrm{q}=+\mathrm{ve}, \mathrm{w}=-\mathrm{ve}, \Delta \mathrm{H}=+\mathrm{ve}$
4 q=-v e, w=-v e, $\Delta H=-v e$

Question 6: Correct Sequence of reagent for given

(I) $\left(\mathrm{CH}_3\right)_3 \mathrm{CO}, \mathrm{H} . \mathrm{B} . \mathrm{O}, \mathrm{CrO}_3 / \mathrm{H}_2 \mathrm{SO}_4$
(II) $\left(\mathrm{CH}_3\right)_3 \mathrm{CO}$; O.M.D.M, $\mathrm{CrO}_3 / \mathrm{H}_2 \mathrm{SO}_4$
(III) EtO, H.B.O, PCC

(IV) $\mathrm{EtO}, \mathrm{H}^{+} / \mathrm{H}_2 \mathrm{O}, \mathrm{KMnO}_4$

Question 7: But-2-yne react with $\mathrm{H}_2, \mathrm{Pd}, \mathrm{BaSO}_4$ form X and react with Na , $\mathrm{NH3}$ form Y
Select corrects statements
(I) $\mathrm{X} \& \mathrm{Y}$ are stereoisomers
(II) X has more dipole momentum then Y
(III) X has more B.P. then Y
(IV) $\mathrm{X} \& \mathrm{Y}$ will give different product with $\mathrm{O}_3$
(A) I,II & III
(B) II, IV \& III
(C) I,IV & II
(D) All
(IV) $\mathrm{EtO}^{-}, \mathrm{H}^{+} / \mathrm{H}_2 \mathrm{O}, \mathrm{KMnO}_4$

Question 8: Propane nitrile react with $\mathrm{SnCl}_2+\mathrm{HCL}$, followed by hydrolysis form X
But-2-encereact with $\mathrm{O}_3, \mathrm{Zn}$ form Y
X & Y react with OH/ heat form different products which product can not form. $\_\_\_\_$

Question 9: 137 mg of paranitro toluene react with $\mathrm{Sn}+\mathrm{HCl}$ form A which react with $\mathrm{AcO}_2$ form B and B react with Bromine in presence of acetic acid form C. find out mass of C in mg.

Question 10: Consider the following reaction

Choose the correct option.

1) $\begin{aligned}
& \mathrm{X} \Rightarrow \mathrm{CH}_3 \mathrm{CH}_2 \mathrm{CH}_2 \mathrm{CH}_3 \\
& \mathrm{Y} \Rightarrow \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \text { (cis) }
\end{aligned}$
2) $\begin{aligned}
& \mathrm{X} \Rightarrow \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \text { (cis) } \\
& \mathrm{Y} \Rightarrow \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \text { (trans) }
\end{aligned}$
3) $\begin{aligned}
& \mathrm{X} \Rightarrow \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \text { (cis) } \\
& \mathrm{Y} \Rightarrow \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \text { (cis) }
\end{aligned}$
4) $\begin{aligned}
& \mathrm{X} \Rightarrow \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \text { (trans) } \\
& \mathrm{Y} \Rightarrow \mathrm{CH}_3-\mathrm{CH}=\mathrm{CH}-\mathrm{CH}_3 \text { (cis) }
\end{aligned}$

Question 11 :Given below are two statements.
Statement I: Sublimation is a purification technique that is used to separate those solid substances which changes from solid to vapour state without passing through liquid state.
Statement II: If external atmospheric pressure is reduced, then boiling point of substance is decreased.
In the light of the above statements, choose the correct option.

1) Both statement I and statement II are correct

2) Both statement I and statement II are incorrect

3) Statement I is correct but statement II is incorrect

4) Statement I is incorrect but statement II is correct

Question 12: Find de - broglie wavelength of $\mathrm{O}_2$ molecule.
Given mass of $\mathrm{O}_2$ molecule is $\mathrm{m}_{\mathrm{O}_2}$ and the Temp is $27^{\circ} \mathrm{C}$.

Question 13: Consider the following graph of concentration vs time.

Find half-life of reaction.

1 600 s
2 200 s
$3 \quad 300 \mathrm{~s}$
$4 \quad 100$ s

Question 14: Which one give positive Tollen's test.

1)

2)

3)

4) All

Maths

Question 1: A rectangle is formed by lines $x=0, y=0, x=3, y=4$. A line perpendicular to $3 x+4 y+6=0$ divides the rectangle into two equal parts, then the distance of the line from $\left(-1, \frac{3}{2}\right)$ is

$1\quad2$
$2 \quad \frac{17}{10}$
$3 \quad\frac{6}{5}$
$4 \quad\frac{8}{5}$

Question 2: Let $A=\{-2,-1,0,1,2,3,4\}$ and $R$ be a relation $R$, such that $R=\{(x, y):(2 x+y) \leq-2, x \in A, y \in A\}$.

Let I = number of elements in R
$m=$ minimum number of elements to be added in $R$ to make it reflexive.
n= minimum number of elem
be added in $R$ to make it symmetric, then $(1+m+n)$ is
1)10

2)17

3)11
4) 14

Question 3: Number of 4-letter words with or without meaning formed from the letters of the word PQRSSSTTUVV is

1) 1232

2) 1400

3) 1422

4) 1162

Physics

Question 1: There are two point charges, one at vertex and other at face as shown the cube. Find electric flux through the cube.

$1\quad3 q / \varepsilon_0$
$2\quad q / \varepsilon_0$
$3\quad3 q / 4 \varepsilon_0$
$4\quad5 q / \varepsilon_0$

Question 2: If a projectile is being projected with speed $v$ at angle $60^{\circ}$ with horizontal. Find the ratio of speed at the highest point ( $v_B$ ) to the speed at final point ( $v_C$ ).

1) 3:4
2) 1:3
3) 1: 2
4) 1:12

Question 3: For the given set of measurements, find relative error.

$20.00,19.75,18.25,17.01$

1) 0.12
2) 0.06
3) 0.09
4) 0.17

Question 4:

Question 5: Find out the correct energy for the grand state or energy transition. (symbols have usual meaning & $n \rightarrow m$ gives the transition)
$1 \quad\mathrm{H}(-6.8 \mathrm{eV})$
$2 \quad\mathrm{Li}^{2+}(-13.6 \mathrm{eV})$
$3 \quad \mathrm{He}_{2 \rightarrow 1}^{+}(40.8 \mathrm{eV})$
$4 \quad \mathrm{Be}_2^{3+}{ }_1(+13.6 \mathrm{eV})$

JEE Main 2026 January 23 Shift 1 Paper Analysis

The JEE Main 2026 January 23 shift 1 paper analysis is shared now as the exam is concluded. Candidates can find the paper analysis in the table below.

Memory Based Questions are added below:

JEE Mains 2026 Jan 23 Paper Analysis Shift 1

In this section, we are providing you with a detailed analysis of the JEE Main shift 1 of Jan 23.

1. Physics:

• The overall difficulty level of the Physics paper was easy.

• The overall difficulty level of the JEE Main 23rd January morning shift Physics section was difficult compared to the 21st jan evening shift and easy with the morning shift of 21st Jan.

• The Physics paper was hard with respect to the maths and chemistry papers.

• JEE Main 22rd January morning shift Physics paper time taking due to its toughness.

Questions were asked about the following Topics:

• 2 questions from Error analysis

• 1 matching-type question from Electrostatics

• 1 question from the Lyman series and de Broglie wavelength

• 2 questions from Optics

• 1 question from Current Electricity

• 1 question from MOI

• 1 question from angular momentum

• 1 question from AC

• 1 question from magnetic effect of current

2. Chemistry:

• Overall difficult level of Chemistry was moderate

• Chemistry questions are tricky and time-consuming.

• The overall difficulty level of the Chemistry section in the JEE Main 23 January morning shift was at a similar level compared to the 21 and 22 January shifts.

• The Chemistry paper was tough wrt maths and physics sections.

• The paper was doable for those who went through the proper revision

• The organic include in all questions

• The chemistry section required almost 50-55 minutes to solve

• Paper has statement-based questions

• Organic and inorganic are tougher than physical.

Questions were asked about the following Topics:

• 1 questions from Some basic concepts of chemistry ( Mole Concept)

• 1 question from Chemical Bonding

• 1 question from biomolecules

• 1 question from GOC

• 1 question from Ionisation Energy

• Mix question from chemical and ionic equilibrium

• 1 question from electrochemistry

• 1 question from Chemical Kinetics ( Graph type question)

• 1 question from Amines

3. Maths:

• The overall difficulty level of the Mathematics paper in this shift was moderate.

• The Maths paper had lengthy questions.

• The maths section was difficult compared to physics and chemistry.

• This shift's difficulty level was moderate, similar to the shifts that have happened so far.

• The question paper pattern remained the same as in other shifts.

• Mathematics sections had lengthy questions that required time to handle.

• The average time taken for the Mathematics section was approximately 70-80 minutes.

• To score well, students needed clear concepts, good calculation speed, accuracy, and smart use of time while handling other subjects.

Questions were from the following important topics:

• 1 Question from Relation

• 6 Questions from Trigonometry

• 2 Question from Matrices and Determinants (1 Adjoint, 1 Inverse)

• 3 Questions from Vector Algebra and Three-Dimensional Geometry

• Questions from Integral Calculus

• 2 Questions from conic sections

JEE Main 2026 Jan 23 Shift 2 Question papers

The shift 2 Jan 23 JEE Main unofficial question paper PDF download links will be updated here when they are made available.

JEE Main 2026 January 23 Shift 2 Paper Analysis

Candidates will be able to check the JEE Main 2026 Jan 23 shift 2 paper analysis subject-wise in the table below, after the exam is concluded.

JEE Main 2026 January 23 Answer Key & Solutions

The unofficial JEE Main 2026 Jan 23 Answer key for shift 1 is made available on various websites as the exam is completed. The answer key will contain the solutions to the questions asked in the JEE Main exam. NTA will release the official JEE Main 2026 answer key for both shifts of the JEE Main 2026 exam at jeemain.nta.nic.in 2 to 3 days after.

JEE Main 2026 Exam Day-wise Question Papers & Answer Keys

JEE Main Student Reactions and Expert Reviews

The JEE Main student reactions for the JEE Main 2026 Jan 23 exam will be updated here as the exam is concluded. Based on the student reactions, various subject experts will also review the JEE Main 2026 Jan 23 exam for both shifts.

Expected JEE Main 2026 Marks vs Percentile

Candidates can check the JEE Main 2026 marks vs percentile in the table below

JEE Main 2026 Expected cutoff

The expected JEE Main 2026 qualifying cutoff is mentioned below.

How the JEE Main 2026 January 23 Question Papers Help Aspirants

Referring to the JEE Main 2026 Jan 23 question paper helps candidates determine their performance in the exam. Additionally, candidates who are yet to attempt the exam can determine the difficulty level of the exam, repeated topics and topic-wise weightage trends for the JEE Main 2026 exam. Hence, aspirants should analyse the JEE Main 2026 Jan 23 question paper for both shifts.

JEE Main 2026 Previous Shift Question Papers

Candiadtes can refer to the JEE Main 2026 Jan 21 & 22 question papers for both shifts in the table below to determine the difficulty level of the exam.

JEE Mains Previous Year Question Paper

Candidates can also check the previous year JEE Main 2026 question papers from the table below. Thishelps candidates determine the difficulty, important topics, repeated questions and more in the JEE Main exam.