JEE Main Session-1 Exam 2025 : 23 January Shift-2 Analysis, Review & Question Paper with Answer Key

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JEE Main 2025 January 23 Shift 2 exam is over now. JEE Main 2025 January 23 Shift 2 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 2 students, difficulty level of questions, paper analysis, memory-based question paper with answer key and solutions, etc.

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-2 Physics) Question Paper and Answer Key (Available)

👉 JEE Mains 2025 (23 January Shift-2 Chemistry) Question Paper and Answer Key (Available)

👉 JEE Mains 2025 (23 January Shift-2 Mathematics) Question Paper and Answer Key (Available)

JEE Main 2025 Jan 23 Shift 2 Updates: Exam Ends

The JEE Mains Day 2 Shift 2 paper is now over. Water and rough sheets for calculations were provided inside the exam hall.

JEE Main Exam Overall Analysis 23 January 2025 Shift 2

Parameter	Analysis
Overall difficulty level	Moderate
Difficulty Level of Physics	Easy to Moderate
Difficulty Level of Chemistry	Easy to Moderate
Difficulty Level of Mathematics	Tough
Topics asked in Physics	vector and 3D, Rotation, current electricity, and capacitance, biomolecule, ray optics
Topics asked in Chemistry	Chemical Kinetics, Chemical bonding
Topics asked in Maths	vector and 3D, Matrices, Complex numbers, Area under the curve, Sequence and Series, Ellipse

JEE Mains Shift 2 (Jan 23) Updates: Overall Paper Analysis

Some students found the chemistry section a bit lengthy. Mathematics was tough for a few and moderate for some. The physics section was easy to moderate. Overall the paper was easy to moderate.

NTA JEE Mains Day 2 Shift 2 Paper : Physics and Chemistry was moderate

No questions were asked about chemical kinetics. In physics, questions were asked from rotation, current electricity, and capacitance. More were asked from Organic chemistry than physical chemistry.

JEE Main 2025 Jan 23 Updates: Questions asked from Physics and Chemistry

Three questions were asked from current, one from biomolecule, and two questions from ray optics. No questions were asked from atomic structure.

JEE Main Jan 23 Shift 2 Exam News: Mathematics difficulty level

Two questions were asked from vector and 3D. Students have said that the maths paper was lengthy and time consuming.

JEE Main Shift 2 Exam Updates: Technical Glitches Experienced

Few students experienced technical errors mid-way in their computer system while attempting the exam. However, the issue was resolved quickly. Students were shifted to another system.

JEE Mains 2025 Jan 23 Updates: Extra Time Provided to Students facing technical errors

Candidates who faced issues with their system were provided extra time to complete their exam (depending on how long it took to get the issue resolved).

Chemistry

Physics

Chemistry

Maths

JEE Main 23 January 2025 Physics Shift 2 Question Paper with Answer Key Solutions

Here is JEE Main 23 January 2025 Physics question paper with answer key solutions for Shift 2.

Q.No.	Question	Answers
1	Find the total work done from A to E.	-3P ₀V ₀
2	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.	Statement 1 incorrect and Statement 2 is correct.
3	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	10 ⁵rad/s
4	A satellite is nine times closer to earth compared to moon. Time period of moon is 27 days then period of satellite is	1 Day
5	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 = 1/4πε ₀= 9 × 10 ⁹Sl units)	-18 * 10 ⁹J
6	Two ideal diodes are connected in circuit as shown. Find current through battery.	0.5 A
7	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	3.1 * 10 ^-8
8	A particle of mass m is projected at angle 60° with horizontal. If initial kinetic energy is Kε ₀, and kinetic energy at maximum height is Kε ₀/x find value of x.	x = 4
9	The energy in a system varies with position and time as E(x,t) = x ³e ^-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.	6%
10	A concave mirror of focal length f dipped into a flued of refractive index μ. The new focal-length mirror is	f
11	Match the correct dimensions- (a) Magnetic Field - (i) ML ² (b) Permittivity of free space - (ii) M ^-1L ^-3T ⁴A ² (c) Moment of Inertia - (iii) MT ^-2A ^-1 (d) Velocity - (iv) LT ^-1	(a)→(iii), (b)→(ii), (c)→(i), (d)→(iv)
12	The temperature of a body of mass m and specific heat capacity s is raised slowly from T ₁to T ₂. The change is entropy of the system is	ms ln(T ₂/T ₁)
13	A moving coil galvanometer with coil resistance G = 30 Ω, shows full-scale deflection when the current through it is 20 mA. The galvanometer is converted to an ammeter of range 3 A by using a shunt, then resistance S is	0.2 Ω
14	Torque on a uniform disk of mass 2 kg, radius 1 m is given as ????(t) = 5t ²- 8t. If the disk was initially at rest, find power by torque at t = 1 s.	7 W
15	During charging of capacitor of 2.5 mF in DC circuit, the displacement current is found to be 0.25 mA then find rate of change of voltage V w.r.t. time dV/dt.	100 V/s
16	In a photoelectric experiment, the stopping potential of 2 V, the work function of metal is 2.14 eV. Find the wavelength of incident light (given hc = 1242 eV-nm)	300 nm
17	The equation of wave travelling in a medium is given by y(x, t) = 4.0 sin(20 × 10 ^-3x + 600t) mm. The velocity of wave is n x 10 ⁴m/s. Find n.	3
18	Find the charge on the capacitor (in µF) at steady state.	16 mC
19	For a prism, the minimum deviation is equal to the angle of prism. If the refractive index is √3, find the minimum deviation (in degrees)	60 ^O
20	A satellite of mass m is moving in circular orbit at a height R from surface of Earth (mass M, radius R). If the angular momentum of the satellite is m√NGMR, find N.	N = 2

JEE Main 23 January 2025 Chemistry Shift 2 Question Paper with Answer Key Solutions

Here is JEE Main 23 January 2025 Chemistry question paper with answer key solutions for Shift 2.

Q.No.	Question	Answers
1.	The correct order of melting point of 14 group element is (K)	C> Si> Ge>Pb> Sn
2.	What will be effect on pH of water it is heated	Decrease
3.	α -helix protein and β- pleated sheet protein belong from which of the following structure?	Secondary
4.	Match the following List I with list II	A (ii) B (i) C (iv) D (iii)
5.	Which one of the following plots represents zero order reaction?
6.	By using relation ΔG= ΔH- TΔS Which one of the following is incorrect for spontaneous reaction at a given temperature	ΔH>0 ΔS<0
7.	Statement I: For a particular shell, maximum number of orbital is n ² Statement II: For d-subshell, number of orientations lies between -1 to +1 including zero	S-I and S-II both are correct
8.	The total number of isomers possible (aldehyde & ketones) for C ₄H ₈O are	3
9.
10.	Which of the following complex has a ¹⁴configuration	[MnF ₆] ^3-
11.	Consider the given following reaction X ₂Y(S) __ X ₂(g) + 1/2 Y ₂(g). If α is the degree of dissociation, Calculate Kp in terms of P total pressure	Kp= 2P ^3/2 3 ^3/2
12.	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.	0.5
13.
14.		27
15.		4
16.	0.01 mole of an organic compound (Hydrocarbon) gives 1.76 gm CO ₂and 0.9 gm H ₂O on complete combustion. Find out the chemical formulae of the compound.	0.04
17.		A i B ii C iii D iv
18.		III> IV> I> II

JEE Main 23 January 2025 Mathematics Shift 2 Question Paper with Answer Key Solutions

Here is JEE Main 23 January 2025 Mathematics question paper with answer key solutions for Shift 2:

Q.No.	Question	Answers
1	A square is divided in 4 x 4 squares. If two squares are chosen randomly then the probability that the squares doesn't share common side is	4/5
2	There are 5 boys and 4 girls. The sum of number of ways to sit them such that all boys together and number of ways such that no boys sit together is equal to	17280
3	Let f(x) = 6 + 16cos((π/3) - x)cos((π/3) + x)cosxsin3x*cos6x if range of f(x) is [α, β], then distance of (α, β) from 3x + 4y + 12 = 0 is	11
4	Consider the terms 8, 21, 34, 47,... 320. The variance of the given data set is	8788
5	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	2√(5/3)
6	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 = ?	9
7	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.	0
8	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	9x ²+ 9y ²+36x - 28 = 0
9	If system of linear equations x + y + z = 6 x + 2y + 5z = 9 x + 5y + λz = μ has no solutions. Then value of λ equals to	17
10	Let S be the region consisting of points (x, y) such that -1 ≤ x ≤ 1 and 0 ≤ y ≤ α + e\|x\| - e\|-x\|. If the area bounded by the region is 2(e2 +8e + 1)/e square units, then find the value of α.	10
11	If z is a complex number such that \|z\| and \| z/z̄ + z̄/z \| = 1, then the number of complex number z is	8
12	Let (a, 0) be a point such that its shortest distance from the parabola y ²= 4x is 4. equation of the circle passing through (a, 0) and focus of the parabola having centre on the axis of the parabola is	x ²+ y ²- 6x + 5 = 0
13	If 10th and 11th terms of an arithmetic progression are roots of equation 3x2 - px +q = 0 and the common difference of the arithmetic progression arithmetic progression is 3/2. Also, the sum of first 11 terms of the arithmetic progression is 88, then q - 2p is	474

JEE Main Session 1 Memory Based Paper 2025

Exam Dates	Physics	Chemistry	Maths
22 January 2025	Shift - 1	Shift - 1	Shift - 1
22 January 2025	Shift - 2	Shift - 2	Shift - 2
23 January 2025	Shift - 1	Shift - 1	Shift - 1
23 January 2025	Shift - 2	Shift - 2	Shift - 2
24 January 2025	Shift - 1	Shift - 1	Shift - 1
24 January 2025	Shift - 2	Shift - 2	Shift - 2
28 January 2025	Shift - 1	Shift - 1	Shift - 1
28 January 2025	Shift - 2	Shift - 2	Shift - 2
29 January 2025	Shift - 1	Shift - 1	Shift - 1
29 January 2025	Shift - 2	Shift - 2	Shift - 2

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