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JEE Main Session-1 Exam 2025 : 23 January Shift-1 Analysis, Review & Question Paper with Answer Key
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JEE Main 2025 January 23 Shift 1 exam is over now. JEE Main 2025 January 23 Shift 1 student feedback and analysis is updated here. Additionally, memory-based unofficial JEE Main 2025 answer key and question paper with solutions for January 23 exam is also uploaded.
Candidates can check the responses of JEE Main January 23, 2025 Shift 1 students, difficulty level of questions, paper analysis, memory-based question paper with answer key and solutions, etc.
Shift 2 will start at 03:00 PM and end at 06:00 PM. Candidates will have to show their JEE Main 2025 Session 1 admit card to enter the JEE Main 2025 exam centre for the shift 2 exam. Additionally, candidates will have to bring a government-issued photo identity card and a passport-sized photograph. Proper adherence to these entry requirements is necessary to attend the exam.
Paper 1 for BE/BTech candidates in JEE Main 2025 will be held on January 22, 23, 24, 28 and 29. Paper 2A and 2B for BArch and BPlan candidates are scheduled on January 30, 2025 from 3:00 PM to 6:30 PM.
👉 JEE Mains 2025 (23 January Shift-1 Physics) Question Paper and Answer Key (Available)
👉 JEE Mains 2025 (23 January Shift-1 Chemistry) Question Paper and Answer Key (Available)
👉 JEE Mains 2025 (23 January Shift-1 Mathematics) Question Paper and Answer Key (Available)
JEE Main 2025 January 23 : Strict Checking Conducted at JEE Main Centres
- NTA follows strict guidelines and students to ensure a smooth examination process. Here's what students had to say -
- As per the student's feedback at the centre, the frisking was very strict. A candidate at Kota Centre was asked to remove their t-shirt as there was metal in the button of their shirt.
- Handkerchief was also not allowed at the centre.
JEE Main Exam Overall Analysis 23 January 2025 Shift 1
Aspirants can find Day 2 detailed analysis of overall and section-wise difficulty levels, high weightage topics, and anticipated good attempts in the table below.
| Parameter | Analysis |
| Overall difficulty level | Easy to Moderate |
| Difficulty Level of Physics | easy to moderate |
| Difficulty Level of Chemistry | easy to moderate |
| Difficulty Level of Mathematics | moderate to tough |
| Topics asked in Physics | 1 question from Diode 1 question from Electrostatics 1 question from Thermodynamics 1 question from Gravitation 1 question from Radioactive decay 1 question from the current based on the galvanometer |
| Topics asked in Chemistry |
Overall the JEE Main chemistry was on the easier side.
|
| Topics asked in Maths |
|
| Was the paper time-consuming? | |
| Expected number of good attempts |
JEE Main Paper 1 Updates: Difficulty Level of JEE Main Jan 23 Shift 1 Paper
- Mathematics - moderate to tough
- Physics - easy to moderate
- Chemistry - easy to moderate
JEE Main Jan Shift 1 Updates: Students Reactions After attempting JEE Main Jan 23 shift 1
Few students were quite happy with the paper. The difficulty level was easy to moderate. A few questions on mathematics were found tricky. The question structure was pretty much similar to the JEE Main Jan 22 paper.
- As per the students, the JEE Main 2025 Jan 23 Shift 1 paper was moderate.
- Average attempted questions (20 to 25 questions) from each section.
- Few students found physics questions tricky, and chemistry easy.
- Maximum questions were asked from inorganic chemistry.
- Mathematics was tough and lengthy
JEE Main 2025 January session day 2 : NEET students also attempted JEE Main 2025 exam
NEET appearing candidates were also found appearing for the JEE Main Jan 23, 2025 shift 1 paper. Many of them found the paper to be easy to moderate.
JEE Main 2025 Jan 23 (Day 2 ) : Mathematics Section was on the Tougher Side
Few students found the mathematics section to be lengthy. A lot of time was consumed while solving the questions. It took 1.5 hours to complete the JEE Main Maths section of (Jan 23) shift 1 paper
JEE Main 23 January 2025 Physics Shift 1 Question Paper with Answer Key Solutions
Here is JEE Main 23 January 2025 Physics question paper with answer key solutions for Shift 1.
| Q.No. | Question | Answers |
| 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 | Displacement |
| 2 |
For the given velocity-time (v-t) graph, find distance travelled at 0.5 sec.
|
112.5 m |
| 3 | The displacement of a particle as function of time is x(t) = A sin(t) + B cos 2 (t) + ct 2 + D. Find the Dimension of [ABC/D]. | L 2 T -2 |
| 4 | The ratio of electric force to gravitational force between two particles having charges q 1 , q 2 and masses m 1 and m 2 respectively is |  |
| 5 | 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. |
Statement 1 is true and Statement 2 is false |
| 6 | 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 |
P(i), Q(iii), R(ii), S(iv) |
| 7 | In given DC circuit, find the current for R = 12 Ω in a steady state. |
1 A |
| 8 | The key shown in the circuit is closed at t = 0. Choose the incorrect option regarding the conditions at t = 0. |
Current in the circuit is zero. |
| 9 | Self-inductance depends on ______. | Geometry and Medium property |
| 10 | Solid sphere of mass m rolls dawn from rest to achieve speed v 1 an inclined plane of 30°. Sphere achieves speed v 2 an inclined plane of 45° when released from the same height then  is |
1 |
| 11 | Find the equation of magnetic field for the given equation of electric field (for EM wave). E = E 0 (4î– 3ĵ) cos(ωt - kz) |
 |
| 12 | For the circuit shown below (A) Current in ammeter is 2 A (B) Net resistance is 8 Ω (C) Voltage across BC is 4 V (D) Current through diode is 1 A Choose the correct option. |
Only A, C, D are correct. |
| 13 | Find the time period of a cube of side length 10 cm and mass 10 g oscillating in water. (Density of water = 10 3 kg/m 3 and g = 10 m/s 2 ) |
π/50 second |
| 14 | 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 | 546 K |
| 15 | From a uniform circular disc of radius 20 cm a circular portion of radius 5 cm is removed. The shift in the position of centre of mass (in cm). |
1 cm |
| 16 | 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 2 m is | 25 |
| 17 | Two objects are equal distances from sphere of radius R and refractive index μ such that the image of one object forms on other object. Find the object distance from the surface of sphere. | R/μ-1 |
| 18 | There is force field F → = x 3 yî + y 2 î in which a particle moves along the line x = y. Find work done by the force as the particle moves from (0, 0) to (2, 2). | 136/15 |
| 19 | In a radioactive decay, decay constant of element A 2 is 3 times that of element A 1 . Find the ratio of nuclei of element 1 to element 2 after one half life of A 2. (Assume initial number of nuclei the same for both elements) |
2 2/3 |
JEE Main 23 January 2025 Chemistry Shift 1 Question Paper with Answer Key Solutions
Here is JEE Main 23 January 2025 Chemistry question paper with answer key solutions for Shift 1
| Q.No. | Question | Answers |
| 1 | Which of the following react with Hinsberg reagent? | A, C, D |
| 2 | Among the following, the most carbanion is |  |
| 3 | Which of the following compound can show Fac-mer isomerism? | [Co(NH 3 ) 3 Cl 3 ] |
| 4 | Which of the following pair of ions are same coloured? | Cr 2+ , Cu 2+ |
| 5 | Which of the following does not belong to the same period in the modern periodic table? | Pd |
| 6 | If 2gm phenol is allowed to react with Br 2 /H 2 O. how much Br 2 will be required to produce 2, 4, 6 tribromophenol (rounded off to the nearest integer) | 10 |
| 7 | If 10 21 molecules are removed from x mg of CO 2 (g), then 2.4 x 10-3 moles are left. Calculate the value of x. | 179 |
| 7. | If 10 21 molecules are removed from x mg of CO 2 (g), then 2.4 x 10-3 moles are left. Calculate the value of x. | 179 |
| 8. | Identify the product formed in the following reaction. |
 |
| 9. | Incorrect statement among the following is | SO 2 act as an oxidising agent but not reducing agent |
| 10. | Consider the following |
Nearest integer= 2 |
| 11. | 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 |
2850 |
| 12. | 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 | 40 |
| 13. | Consider the following sequence of reactions and find the molecular mass of the final product (A) formed in g mol -1 |
171 |
| 14. |  |
A (iv), B (iii), C (ii), D (i) |
| 15. |  |
A (Q), B (P), C (R), D (S) |
| 16 | CO 2+ is forming an octahedral complex with spin spin-only magnetic moment 3.83 BM. Which of the following electronic configuration? | t 2g 5 eg 2 |
| 17. | Given below are two statements: Statement I: During Lassaigne's test, covalent compound is converted to ionic compund Statement II: Na 4 [Fe(CN) 6 ] gives Prussian blue colour reaction with Fe 2 (SO 4 ) 3 |
Both S-I and S-II are correct |
| 18. | 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. |
1.194 atm |
| 19. | 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. |
Both S-I and S-II are correct |
| 20. | For a sample of hydrogen atom, the wavelength observed is 656 nm during a transition. The transition and series of wavelength will be | 3- 2, Balmer |
JEE Main 23 January 2025 Mathematics Shift 1 Question Paper with Answer Key Solutions
Here is JEE Main 22 January 2025 Mathematics question paper with answer key solutions for Shift 1:
| Q.No. | Question | Answers |
| 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 | -1080 |
| 2 | How many words can be formed from the word DAUGHTER such that any vowels are not together | 36000 |
| 3 | 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. | 4/9 |
| 4 | 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 . |
2 |
| 5 | Find cos -1 [ (12/13) cosx + (5/13) sinx ] if x ∈ [ π/2, π ] | x - tan -1 (5/12) |
| 6 | If for the system of linear equations having infinite solutions (λ - 4)x + (λ - 2)y + λz = 0 2x + 3y + 5z = 0 x + 2y + 6z = 0 then λ 2 + λ is |
90 |
| 7 | 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? | 7 |
| 8 | The sum of all rational terms in the expansion ( 1 + 2 1/3 + 3 1/2 )6 is | 638 |
| 9 | If | z/(z + i) | = 2 represents a circle with centre P then distance of P from D is (where D: (1,5)) | (370/9) 1/2 |
| 10 | If the equation a(b - c)x 2 + b(c - a)x + c(a - b) = 0 has equal roots and if a + c = 5 and b = 16/5, then the value of a 2 + c 2 is equal to | 9 |
| 11 | 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 | 8 |
| 12 | Let A and B are non-singular commutative matrices. Then A[(adj A -1 ) (adj(B -1 ))] -1 B is equal to | |A| |B| I n |
| 13 | The area of larger portion enclosed by curves y = | x - 1 | and x 2 + y 2 = 25 is equal to (απ + β)/4 (where α, β are natural numbers), then α + β equals to | 77 |
| 14 | Let f(x) = log e x and g(x) = [ (2x 4 - 2x 3 - x 2 + 2x - 1)/(2x 2 - 2x + 1) ], then the domain of f(g(x) for x > 0 is | (1, ∞) |
| 15 | If the curve satisfying the differential equation dy/dx = (6 - 2e 2x y)/(1 + e 2x )passes through (0, 0) and (In 2, k), then k is | (6/5)*(ln 2) |
| 16 | Find I = ∫ dx /((x - 1) 11/13 *(x + 15) 15/13 ) | (13/32)((x - 1)/(x + 15)) 2/13 + C |
JEE Main Session 1 Memory Based Paper 2025
| Exam Dates | Physics | Chemistry | Maths |
| 22 January 2025 | Shift - 1 | Shift - 1 | Shift - 1 |
| Shift - 2 | Shift - 2 | Shift - 2 | |
| 23 January 2025 | Shift - 1 | Shift - 1 | Shift - 1 |
| Shift - 2 | Shift - 2 | Shift - 2 | |
| 24 January 2025 | Shift - 1 | Shift - 1 | Shift - 1 |
| Shift - 2 | Shift - 2 | Shift - 2 | |
| 28 January 2025 | Shift - 1 | Shift - 1 | Shift - 1 |
| Shift - 2 | Shift - 2 | Shift - 2 | |
| 29 January 2025 | Shift - 1 | Shift - 1 | Shift - 1 |
| Shift - 2 | Shift - 2 | Shift - 2 |
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