JEE Main Question Paper 23 January 2025 (Available) LIVE Updates: Shift 1, 2 memory-based questions with answer key

Rini Maria

Updated On: January 25, 2025 04:01 AM

JEE Main Question Paper 23 January 2025 Shift 1 and 2 that includes memory-based questions can be checked here. JEE Main 2025 January 23 answer key for Shift 1 and 2 by coaching institutes can be accessed here. 
JEE Main Question Paper 23 January 2025 LIVE UpdatesJEE Main Question Paper 23 January 2025 LIVE Updates

JEE Main Question Paper 23 January 2025: The Day 2 of JEE Main 2025 Session 1 exam for B.Tech is being administered by the National Testing Agency (NTA) in a number of Indian cities as well as 15 foreign countries today, January 23 . Examinees taking the online (computer-based) examination can access the memory-based JEE Main Question Paper 23 January 2025 for both Shift 1 (morning session) and Shift 2 (afternoon session) here, together with the answer key solutions. Students appearing for the Paper 1 exam on January 24, 28 and 29 can refer to the memory-based questions of JEE Mains 2025 January 23 question pape r and JEE Main 2025 January 22 Question Paper to plan their last-minute revision. The total number of questions on Paper 1 is 75, with 25 questions falling into each of the following categories: physics, chemistry, and mathematics. All of the Section B questions from Papers 1 and 2 that were previously optional are now mandatory this year. On Day 1, the difficulty level of the Shift 1 and 2 exam was 'Moderate'.

Expected Important Topics for JEE Main 24 January 2025 JEE Main Expected Percentile Score January 2025

JEE Main Question Paper 23 January 2025 Shift 1

Candidates can access subject-wise questions along with unofficial answer key solutions for the morning session Paper 1 (B.Tech) exam below-

JEE Main 23 Jan Physics Paper Shift 1

  • Electric flux ϕ is related with linear charge density λ and surface charge density σ as ϕ = αλ + βσ, where α and ẞ are of appropriate dimensions of (β/a) is
  • In given DC circuit, find the current for R = 12 Ω in a steady state.
  • Find the equation of magnetic field for the given equation of electric field (for EM wave).
    E = E 0 (4î– 3ĵ) cos(ωt - kz)
  • In given DC circuit, find the current for R = 12 Ω in a steady state.
  • The key shown in the circuit is closed at t = 0. Choose the incorrect option regarding the conditions at t = 0

JEE Main 23 Jan Chemistry Paper Shift 1

  • Which of the following react with Hinsberg reagent?
  • Which of the following compound can show Fac-mer isomerism?
  • Which of the following pair of ions are same coloured?
  • Which of the following does not belong to the same period in the modern periodic table?
  • Which of the following does not belong to the same period in the modern periodic table?
  • Check More: JEE Main 23 January 2025 Chemistry Question Paper Shift 1 with Answer Key Solutions

JEE Main 23 Jan Mathematics Paper Shift 1

  • If for an arithmetic progression, if first term is 3 and sum of first four terms is equal to of the sum of next four terms, then the sum of first 20 terms is
  • How many words can be formed from the word DAUGHTER such that any vowels are not together
  • Two biased dies are tossed. Die 1 has 1 on two faces, 2 on two faces, 3 and 4 on other faces, while die 2 has 2 on 2 faces, 4 on 2 faces and 1 and 3 on other faces. Then the probability that when throwing these dices we get sum 4 or 5.
  • If f(x) is continuous at x = 0, where
    f(x) = { (2/x) (sin(k 1 + 1)x + sin(k 2 + 1)x),    x < 0
    = { 4                                                       x = 0
    = { (2/x) (log(k 2 x + 1)/log(k 1 x + 1)         x > 0
    Find the value of k 1 2 + k 2 2 .
  • Check More: JEE Main 23 January 2025 Mathematics Question Paper Shift 1 with Answer Key Solutions
Also read | JEE Main Question Paper January 2025 Shift 1 and 2 (All Days)

JEE Main Question Paper 23 January 2025 Shift 2

For the afternoon session, examinees can access the memory-based questions for Physics, Chemistry, and Mathematics along with the answer key solutions below.

JEE Main 23 Jan Physics Paper Shift 2 2025

  • Statement 1: Graph of frequency f of X ray and atomic number Z of heavy nucleus is straight line, in X ray emission.
    Statement 2: Graph of square root of frequency √f of X ray and atomic number Z of heavy nucleus is straight line, in X ray emission.
  • In a series LCR circuit, inductance L = 100 mH and capacitance C = 10 nF. The angular frequency of the source when current has maximum amplitude in the circuit is----
  • A satellite is nine times closer to earth compared to moon. Time period of moon is 27 days then period of satellite is
  • Find the total work done from A to E.

JEE Main 23 Jan Chemistry Paper Shift 2 2025

  • The correct order of melting point of 14 group element is (K)
  • What will be effect on pH of water it is heated
  • α -helix protein and  β- pleated sheet protein belong from which of the following structure?
  • Match the following List I with list II

JEE Main 23 Jan Mathematics Paper Shift 2 2025

Also read | Expected Marks for JEE Main Percentile January 2025

Our subject matter specialists have provided the questions for each subject for both shifts of the January 23 exam to help test takers review the level of difficulty of the question paper. Candidates will observe that the questions are repeated in the next shifts if they practice them. Candidates will receive one mark for each incorrect response and four marks for each correct response.

Also read | Exam Analysis (All Days) JEE Main 2025 Session 1 Exam Analysis

23 January Shift 1 Analysis:

  • Difficulty level of Mathematics: Moderate to hard, few questions were tricky to answer
  • Difficulty level of Physics: Easy to moderate
  • Difficulty level of Chemistry: Easy to moderate

Note, that the overall difficulty level of 23 January shift 1 exam is quite a similar with 22 January JEE Main exam.
23 January Shift 2 Analysis:

  • Overall difficulty level: Easy to moderate
  • Chemistry section was a bit lengthy and it was not so easy like the previous shifts
  • Physics section was easy to moderate level
  • Mathematics section was hard and took time to solve the section

Exam takers must keep checking the blog for regular updates on subject-wise JEE Main Question Paper 23 January 2025 for Shift 1 and Shift 2 along with other relevant details.

JEE Main Question Paper 23 January 2025 LIVE Updates: Shift 1, 2 memory-based questions with answer key

  • 04 00 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025: When will Session 2 Exam will take place?

    As per the official notification, the JEE Main April Session exam 2025 will take place from April 1 to 8, 2025. 

  • 03 30 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Mathematics Q7

    Ques. A rod of length 8 units having two end points always lie on x - y + 2 = 0 and x + y + 2 = 0. A point P divides this line in ratio 2: 1. Then locus of P is
    Ans. 9x2 + 9y2 +36x - 28 = 0

  • 03 00 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Mathematics Q5

    Ques. If the square of the shortest distance between the lines (x - 2)/1 = (y - 1)/2 = (2 + 3)/-3 and (x + 1)/2 = (y + 3)/4 = (2 + 5)-5 is m/n (where m and n are coprime number) then m + m = ?

    Ans. 9

  • 02 30 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Mathematics Q6

    Ques. A = {(x, y)| |x + y ≥ 3};
    B = {(x, y)| |x + y ≤3}
    Let C = A ∩ B. Find the sum of x + y ∀ x, y ε C.

    Ans. 0

  • 02 00 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025: When will April Session application form fill up start?

    As per the official notice, the JEE Main April Session 2025 application form fill up process will start on January 31, 2025. Interested candidates should visit the official website to participate in the session 2 registration process. 

  • 01 30 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Chemistry Q6

    Ques. When a non volatile solute (A) is added to a volatile solvent, the vapour pressure of solvent decreases by 10mm Hg. Mole fraction of solute is 0.2. If 2nd solute (B) is added to the same solution and vapour pressure of solution decreases  by 20mm Hg. Calculate mole fraction of 2nnd solute in the final solution.

    Ans. 0.5

  • 01 00 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q4

    Ques. There are 5 boys and 4 girls. The sum of the number of ways to sit them such that all boys sit together and number of ways such that no boys sit together is equal to:

    Ans. 17280

  • 12 30 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025 Shift2 Physics Q4

    Ques. The energy in a system varies with position and time as E(x,t) = x3e-ßt, where ẞ = 0.3 sec-1. Given that the P% error in x = 1.2% and that the % error in t = 1.6%, find the maximum % error in E at t = 5 sec.

    Ans. 6%

  • 12 00 AM IST - 25 Jan'25

    JEE Main Question Paper 23 January 2025 Shift2 Physics Q3

    Ques. A particle of mass m is projected at angle 60° with horizontal. If initial kinetic energy is Kε0, and kinetic energy at maximum height is Kε0/x find value of x

    Ans. x = 4

  • 11 30 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Chemistry Q5

    Ques. Consider the given following reaction
    X2Y(S) __ X2(g) + 1/2 Y(g). If α is the degree of dissociation, Calculate Kp in terms of P total pressure

    Ans. Kp= 2P3/2


            3 3/2

  • 11 00 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q3

    Ques. Let M (1/2, 1) be the midpoint of a chord to the ellipse x2/2 + y2/4 = 1, then the length of the chord is

    Ans. 2√(5/3)

  • 10 45 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Mathematics Q2

    Ques. Consider the terms 8, 21, 34, 47,... 320. The variance of the given data set is

    Ans. 8788

  • 10 30 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Mathematics Q1

    Ques. Let f(x) = 6 + 16cos((π/3) - x)cos((π/3) + x)*cosx*sin3x*cos6x if range of f(x) is [α, β], then distance of (α, β) from 3x + 4y + 12 = 0 is

    Ans. 11

  • 10 15 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 2 Chemistry Q4

    Ques. Which of the following complex has a14 configuration

    Ans. [MnF6]3-

  • 10 00 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift2 Physics Q2

    Ques. In an electromagnetic wave of frequency 20 MHz, value of electric field is 9.3 V/m, then magnitude of magnetic field at that instant is 

    Ans. 3.1 * 10-8

  • 09 45 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift2 Chemistry Q3

    Ques. The total number of isomers possible (aldehyde & ketones) for C4H8O are 

    Ans. 3

  • 09 30 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift2 Chemistry Q2

    Ques. Statement I: For a particular shell, maximum number of orbital is n2
    Statement II: For d-subshell, number of orientations lies between -1 to +1 including zero

    Ans. S-I and S-II both are correct

  • 09 15 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift2 Physics Q1

    Ques. Two charges +7 C and -4 C are located at (-7, 0, 0) and (7, 0, 0), find the electrostatic potential energy of the system. (K = 1/4πε0 = 9 × 109 Sl units) 

    Ans. -18 * 109 J

  • 09 00 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift2 Chemistry Q1

    Ques. By using relation
    ΔG= ΔH- TΔS
    Which one of the following is incorrect for spontaneous reaction at a given temperature 

    Ans. ΔH>0 ΔS<0

  • 08 45 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025: Topics Covered from Physics in Shift 2

    • Electrostatics,
    • Current electricity,
    • Diode,
    • Galvanometer,
    • Ray optics,
    • Prism,
    • Fluid,
    • Pressure,
    • Kinematics,
    • Projectile,
    • Spring,
    • Heat,
    • Waves,
    • Photoelectric,
    • Error,
    • Rotation,
    • Moment of inertia,
    • Torque

  • 08 30 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025: Topics Covered from Mathematics in Shift 2

    • Vector and 3D
    • AP
    • Parabola
    • Conic section
    • Permutation and combination
    • complex number

  • 08 15 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025: Topics Covered from Chemistry in Shift 2

    • Biomolecules
    • PH
    • Named Reactions

  • 08 00 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Physics Q6

    Ques. A bullet of kinetic energy of 125 J strikes a lead block where temperature rises by 50°C. If specific heat of lead is 0.1 J/g-°C then mass of lead block is (Assume half of kinetic energy of bullet is converted to heat) m gram then 2m is

    Ans. 25

  • 07 45 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q10

    Ques. Find I = ∫ dx /((x - 1)11/13*(x + 15)15/13)

    Ans. (13/32)((x - 1)/(x + 15))2/13 + C

  • 07 30 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q9

    Ques. If the curve satisfying the differential equation dy/dx = (6 - 2e2xy)/(1 + e2x)passes through (0, 0) and (In 2, k), then k is

    Ans. (6/5)*(ln 2)

  • 07 15 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q8

    Ques. Let f(x) = logex and g(x) = [ (2x4 - 2x3 - x2 + 2x - 1)/(2x2 - 2x + 1) ], then the domain of f(g(x) for x > 0 is

    Ans. (1, ∞)

  • 06 40 PM IST - 24 Jan'25

    JEE Main Question Paper 23 January 2025: Technical Glitches Faced by Shift 2 Candidates

    Few students of JEE Main 23 January shift 2 exam had faced technical glitches during exam. For the same, the students were shifted to other system and they were provided additional time to complete the exam.

  • 07 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q8

    Ques. For a sample of hydrogen atom, the wavelength observed is 656 nm during a transition. The transition and series of wavelength will be

    Ans. 3- 2, Balmer

  • 06 45 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q7

    Ques. Consider the following statements and Choose the correct option.
    Statement I: Fructose does not contain aldehyde group but it gives Tollen's test.
    Statement II: In disaccharides, if the reducing groups are bonded, these are non reducing e.g sucrose. If these functional groups are free then they are reducing eg Maltose and Lactose.

    Ans. Both S-I and S-II are correct

  • 06 30 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q6

    Ques. A (g)- 2B(g)
    For the given reaction initial pressure was 0.6 atm and rate constant is 4.606 x 10-2 sec-1. Find the pressure at 100 sec.

    Ans. 1.194 atm

     

  • 06 15 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q5

    Ques. Given below are two statements:
    Statement I: During Lassaigne's test, covalent compound is converted to ionic compund
    Statement II: Na4[Fe(CN)6] gives Prussian blue colour reaction with Fe2(SO4)3

    Ans. Both S-I and S-II are correct

  • 06 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Shift 1 Exam Ends

    JEE Main 23 January Shift 2 2025 exam ends. Soon the shift 2 analysis along with the subject-wise questions will be added here. 

  • 05 45 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q4

    Ques. CO2+ is forming an octahedral complex with spin spin-only magnetic moment 3.83 BM. Which of the following electronic configuration?

    Ans. t2g5 eg2

  • 05 30 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Mode of Language of the Question Paper

    • Odia
    • Hindi
    • Malayalam
    • Assamese
    • English
    • Bengali
    • Kannada
    • Tamil 
    • Marathi
    • Gujarati
    • Punjabi
    • Tamil 
    • Telugu, and Urdu

  • 05 15 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q7

    Ques. The area of larger portion enclosed by curves y = | x - 1 | and x2 + y2 = 25 is equal to (απ + β)/4 (where α, β are natural numbers), then α + β equals to

    Ans. 77

  • 05 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Shift 2 Will End Soon

    JEE Main 23 January Shift 2 2025 exam will end soon, within 1 hour. Candidates are advised to stay connected with this live blog to get all the latest updates on shift 2 exam analysis, subject-wise questions here. 

  • 04 45 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Physics Q5

    Ques. Adiabatic constant of a gas is 3/2. If volume of gas initially at 0°C is reduced to one-fourth of the original volume then new temperature is

    Ans. 546 K

  • 04 30 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Physics Q4

    Ques. Find the time period of a cube of side length 10 cm and mass 10 g oscillating in water.
    (Density of water = 103 kg/m3 and g = 10 m/s2)

    Ans. π/50 second

  • 04 15 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q6

    Ques. Let A and B are non-singular commutative matrices. Then A[(adj A-1) (adj(B-1))]-1B is equal to

    Ans. |A| |B| In

  • 04 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q5

    Ques. Consider the set S = {1, 2, 3, ..., 1000). Then the number of arithmetic progression that can be formed using elements of set S such that first term is 1 and last term is 1000 is

    Ans. 8

  • 03 45 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q4

    Ques. If the equation a(b - c)x2 + b(c - a)x + c(a - b) = 0 has equal roots and if a + c = 5 and b = 16/5, then the value of a2 + c2 is equal to

    Ans. 9

  • 03 30 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q3

    Ques. If | z/(z + i) | = 2 represents a circle with centre P then distance of P from D is (where D: (1,5))

    Ans. (370/9)1/2

  • 03 15 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q2

    Ques. The sum of all rational terms in the expansion ( 1 + 21/3 + 31/2 )6 is 

    Ans. 638

  • 03 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Mathematics Q1

    Ques. A relation defined on set A = {1, 2, 3, 4), then how many ordered pairs are added to R = {(1, 2), (2, 3), (3, 3)) so that it becomes equivalence relation?

    Ans. 7

  • 02 45 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Physics Q3

    Ques. The displacement of a particle as function of time is x(t) = A sin(t) + B cos2(t) + ct2 + D. Find the Dimension of [ABC/D].

    Ans. L2T-2

  • 02 30 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q3

    Ques. In estimation of sulphur by Carius method, 160 gm of organic compound gives 466 gm of Barium Sulfate. % of sulphur in the organic compound is 

    Ans. 40

  • 02 15 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q2

    Ques. Consider the given values:
    ΔH= 55kJ mol-1
    ΔS= 175 J mol-1 K-1
    T= 25 degree Celcius
    Calculate the value of Gibbs free energy charge (ΔG) in J mol-1

    Ans. 2850

  • 02 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Physics Q2

    Ques. Match the Column appropriately regarding thermodynamic process.
    (P) When volume change is zero    -    (i) ΔW = 0
    (Q) When Pressure is constant       -     (ii) ΔQ = 0
    (R) When no heat is exchanged      -    (iii) Isobaric
    (S) Work done by the gas is equal to heat given to the gas     -     (iv) Isothermal

    Ans. P(i), Q(iii), R(ii), S(iv)

  • 01 45 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Physics Q1

    Ques. Statement-l: Hot water is less viscous than cold water.
    Statement-ll: Surface tension of soap bubble is more than that of a drop of water.

    Ans. Statement 1 is true and Statement 2 is false

  • 01 30 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025 Shift 1 Chemistry Q1

    Ques. If 1021molecules are removed from x mg of CO2(g), then 2.4 x 10-3 moles are left. Calculate the value of x.

    Ans. 179

  • 01 10 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Physics Topics

    • 1 question from Electrostatics
    • 1 question from Gravitation
    • 1 question from Thermodynamics
    • 1 question from Diode
    • 1 question from Radioactive decay

  • 01 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Students Reaction regarding Shift 1

    • Average attempted questions were 18 to 22 from each section
    • Like the 22 January shift 1 and 2 exam, students found the 23 January shift 1 Chemistry paper easy
    • Most of questions of Chemistry were asked from Inorganic Chemistry
    • Mathematics section was tough and calculative

  • 12 50 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Most Weighted Topics from Mathematics

    • Differentiation
    • One question from relations and functions
    • 2 questions from vector
    • Circles
    • one question from calculus (standard question) level

  • 12 40 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Most Weighted Topics from Chemistry

    • Aromatic Compounds
    • Coordination Compounds
    • Physical Chemistry Solutions 
    • One question from d and f blocks
    • One question from p block
    • Thermodynamics
    • One question from Goc-aromaticity
    • One question from the d-d transition
    • One question from Biomolecules
    • One question from Electrochemistry

  • 12 30 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: What is the required percentile for NIT?

    For securing admission to any of the NITs, the general candidates should get 85 to 95 percentile marks. 

  • 12 20 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: What is the Safest Score?

    As per the experts and considering the previous year's cutoff trends, it can be assumed that the score between 175 and 185, will be considered as the safest score. It is considered as the 95 percentile. But to achieve 99th percentile, the candidates should score 245 to 285 in the exam. 

  • 12 10 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Category-Wise Expected Cutoff

    CategoryExpected Cutoff
    General93.24
    OBC79.67
    EWS81.33
    SC60.09
    ST46.70

     

  • 12 00 PM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Shift 1 Exam Ends

    JEE Main 23 January shift 1 exam has ended. Soon the CollegeDekho team will connect the test takers and collect their feedback. Along with it, also the shift 1 mmory based questions will be added here. 

  • 11 45 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Instructions Related to Sign convention

    • When work is done on the system: Positive
    • When work is done by the system: Negative

  • 11 30 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Yesterday's Difficulty Level ranking

    Find out the sequence of JEE Main 22 January exam difficulty level ranking here:

    Mathematics > Physics > Chemistry

  • 11 15 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Yesterday's Shift 1 vs Shift 2 Analysis

    JEE Main 2025 January 22 AnalysisShift 1Shift 2
    Overall difficulty of the examModerateModerate to Difficult
    Section wise difficulty level
    • Mathmatics was easy but was time taking to solve
    • Physics was moderate
    • Chemistry was easy
    • Mathematics was difficult
    • Chemistry was easy
    • Physics was easy to moderate level

  • 11 00 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: One Hour to Go

    JEE Main 23 January shift 1 exam will be going to end in one hour. Candidates are advised to stay connected with this live blog to get all the latest updates for the exam. 

  • 10 45 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Important Formula for Reversible isobaric process

    Formula for Reversible isobaric process is:

    W= P(Vf-Vi)

  • 10 30 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Formula for Temperature conversion from Kelvin to Fahrenheit

    Formula for Temperature conversion from Kelvin to Fahrenheit is:

    (K-273)/(373-373)= (F-32)/(212-32)

  • 10 15 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Formula for Temperature conversion from Celsius to Kelvin

    Formula for Temperature conversion from Celsius to Kelvin is; 

    (C-0)/(100-0)= (K-273)/373-373

  • 10 00 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: One Hour Over of Shift 1 Exam

    The JEE Main 23 January Shift 1 exam will be ended in 2 hours. Soon the paper analysis along with the subject-wise questions will be added here. 

  • 09 45 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Formula for Relation between molar volume (V) and gas constant (b)

    Formula for Relation between molar volume (V) and gas constant (b) is;

    Vc=3b

  • 09 30 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Formula for Relation between Pressure (P) and gas constant (a) and (b)

    Formula for Relation between Pressure (P) and gas constant (a) and (b) is;

    P0= a/27b

  • 09 15 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Formula for Relation between temperature (T) and gas constant (b)

    Relation between temperature (T) and gas constant (b) is;

    Tc= Ba/27Rb

  • 09 00 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Important Formula for Equilibrium Constant (K)

    V- (Rate constant of forward reaction/ rate constant of backward reaction) - Kr/Kb

  • 08 45 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Important Formula for Equilibrium

    Rate of forward reaction= rate of backward reaction

    △G= 0

    Q= Keq

  • 08 30 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Important Formula of Vapor Pressure of Liquid

    Relative Humidity is;

    Partial pressure of H2o vapors/ Vapor pressure of H2o at the temperature

  • 08 15 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Important Formula of Degree of Dissociation

    Formula of Degree of Dissociation is;

    Number of modes dissociated/ Initial number of moles taken

  • 08 00 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Important Formula of Thermodynamics of Equilibrium

    Formula of Thermodynamics of Equilibrium is:

    △G = △G° + 2.303 RTQ

  • 07 45 AM IST - 23 Jan'25

    JEE Main Question Paper 23 January 2025: Important Formula of pH Calculations of Different Types of Solutions

    Strong acid solution:

    • If concentration is greater than 10 −6

    • 07 30 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Important Formula of Ideal gas Equation

      Formula of Ideal gas Equation is;

      PV=nRT

      PV= w/mRT or Pm=dRT

    • 07 15 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Important Formula of Amagat’s Law of partial volume

      Formula of Amagat’s Law of partial volume is:

      V= V1+V2+V3+......Vn

    • 07 00 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Expected Marks for 96 Percentile for Easy Paper

      PercentileExpected Marks for Easy Paper
      96.5 percentile170.3+
      96 percentile164.8+

    • 06 30 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Expected Marks for 97 Percentile for Easy Paper

      PercentileExpected Marks for Easy Paper
      97.5 percentile183.3+
      97 percentile176.3+

    • 06 15 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Expected Marks for 98 Percentile for Easy Paper

      PercentileExpected Marks for Easy Paper
      98.5 percentile202+
      98 percentile191.8+

    • 06 00 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Topics Asked in Chemistry

      • Electrochemistry,
      • p-block
      • Kinetics
      • Thermodynamics
      • d-block
      • Biomolecules

    • 06 00 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Topics Asked in Chemistry

      • Electrochemistry,
      • p-block
      • Kinetics
      • Thermodynamics
      • d-block
      • Biomolecules

    • 05 45 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Expected Marks for 99 Percentile for Easy Paper

      PercentileExpected Marks for Easy Paper
      99.5 percentile236+
      99 percentile215.5+

    • 05 45 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Topics Asked in Physics

      • Mechanics
      • Optics
      • Current Electricity
      • Modern Physics
      • Waves

    • 05 45 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Topics Asked in Physics

      • Mechanics
      • Optics
      • Current Electricity
      • Modern Physics
      • Waves

    • 05 30 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Topics Asked in Mathematics

      • Probability
      • Algebra
      • Matrices
      • Vectors
      • Calculus
      • Coordinate Geometry,
      • Calculus
      • 3D

    • 05 30 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Topics Asked in Mathematics

      • Probability
      • Algebra
      • Matrices
      • Vectors
      • Calculus
      • Coordinate Geometry,
      • Calculus
      • 3D

    • 05 15 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Expected difficulty level

      Based on the yesterday's JEE Main exam analysis, it can be assumed that the difficulty level of the subjects will be:

      Physics: Easy to moderate

      Mathematics: Moderate but a bit lengthy

      Chemistry: Easy

    • 05 15 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Expected difficulty level

      Based on the yesterday's JEE Main exam analysis, it can be assumed that the difficulty level of the subjects will be:

      Physics: Easy to moderate

      Mathematics: Moderate but a bit lengthy

      Chemistry: Easy

    • 05 00 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Day 2 Exam

      Today is JEE Main January 2025 day 2 exam, which will be held in two shifts, shift 1 (9 AM to 12 PM) and shift 2 (3 PM to 6 PM).


       

    • 05 00 AM IST - 23 Jan'25

      JEE Main Question Paper 23 January 2025: Day 2 Exam

      Today is JEE Main January 2025 day 2 exam, which will be held in two shifts, shift 1 (9 AM to 12 PM) and shift 2 (3 PM to 6 PM).


       

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JEE Main Previous Year Question Paper

2022 Physics Shift 1

2022 Physics Shift 2

2022 Chemistry Shift 1

2022 Chemistry Shift 2

2022 Mathematics Shift 1

2022 Mathematics Shift 2

2023 Chemistry Shift 1

2023 Mathematics Shift 1

2023 Physics Shift 2

2023 Mathematics Shift 2

2023 Chemistry Shift 2

2023 Physics Shift 1

2024 Chemistry Shift 1

2024 Mathematics Shift 2

2024 Physics Paper Morning Shift

2024 Mathematics Morning Shift

2024 Physics Shift 2

2024 Chemistry Shift 2

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