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JEE Main Session-1 Exam 2025 : 22 January Shift-1 Analysis, Review & Question Paper with Answer Key
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JEE Main 2025 January 22 Shift 1 exam is over now. JEE Main 2025 January 22 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 22 exam is also uploaded.
Candidates can check the responses of JEE Main January 22, 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 (22 January Shift-1 Physics) Question Paper and Answer Key (Available)
👉 JEE Mains 2025 (22 January Shift-1 Chemistry) Question Paper and Answer Key (Available)
👉 JEE Mains 2025 (22 January Shift-1 Mathematics) Question Paper and Answer Key (Available)
JEE Main 2025 January 22 Analysis and Student Reactions
Student Reactions and Exam Analysis:
Overall Difficulty: The exam was generally considered easy to moderate by students. Mathematics was noted as lengthy but manageable, while Physics and Chemistry were deemed easy to moderate.
Subject-Specific Observations:
- Physics: Questions covered topics such as thermal physics, projectile motion, circuits, diodes, electromagnetic waves, and modern physics. Some students found the Physics section moderately challenging.
- Mathematics: The section was lengthy but considered easy. Topics included Statistics, Probability, Vectors and 3D geometry, and Matrices and Determinants.
- Chemistry: The section was easy, with topics such as the Mole concept, Catalysts, and Biomolecules. Organic and Physical chemistry carried more weightage.
Exam Center Observations: Some exam centers implemented strict frisking protocols, prohibiting items like handkerchiefs and jewelry inside the examination hall.
Expected Scores: Many students are anticipating scores above 200, reflecting their confidence in the exam's manageability.
Comparison with Previous Exams: The exam was similar to the January 27 exam from the previous year, indicating consistency in the exam pattern and difficulty level.
NAT Questions: Numerical Answer Type (NAT) questions were of moderate difficulty, contributing to the overall exam experience.
JEE Main 22 Jan shift 1 Exam Analysis - Paper Overall was easy to moderate
- The JEE Main 2025 Jan 22 shift 1 overall paper was easy as per the initial student reaction.
- The CBT exam had no technical difficulty
JEE Main 2025 exam update: Very Strict Frisking Done
JEE Main 2025 Jan 22 shift 1 exam witnessed very strict frisking at a few exam centres. Even handkerchief and any kind of jewellery was not allowed inside.
JEE Main 2025 Jan 22 shift 1: Subject-wise analysis
- In physics, questions came from thermal, projectile motion, circuits, diodes, EM waves, Modern Physics
- Maths easy but lengthy.
- Exam was similar to January 27 exam held last year
- Chemistry was easy.
- Students are expecting 200+ score
JEE Main 2025 January 22 updates: Topics asked
In shift 1 exam today the topics asked were:
| Subject | Topics |
| Maths | Statistics, Probability, Vectors and 3D geometry, Matrices and Determinants, Permutation and Combination |
| Physics | De Broglie wavelength, SMR, Potentiometer, Ray Optics, heat, Semiconductor, Capacitor |
| Chemistry | Mole concept, Catalysts, Biomolecules Organic and Physical chemistry carried more weightage |
JEE Main 22 Jan 2025 : Shift 1 exam over - Maths lengthy
As per the initial student reaction after JEE Main 2025 Jan 22 shift 1 exam, Maths was lengthy. Physics and chemistry were easy to moderate. Overall paper was similar to last year's January 27 shift paper.
NTA JEE Main 2025 Exam : January 22 Shift 2 exam to begin at 3 PM
The Shift 2 exam scheduled for today will begin at 3 PM and end at 6 PM. JEE Main 2025 January 22 question paper with solution and answer key will be available today based on the memory of the candidates. The official answer key along with question paper and candidate response sheet is expected to be released by NTA by February 2.
JEE Main 22 January 2025 Chemistry Shift 1 Question Paper with Answer Key Solutions
Here is JEE Main 22 January 2025 Chemistry question paper with answer key solutions for Shift 1.
| Q.No. | Question | Answers |
| 1 | For [NiCL 4 ] 2- what is the charge on metal and shape of complex respectively? | +2, Tetrahedral |
| 2 | Compare boiling point of given solutions- (i) 10 -4 NaCl (ii) 10 -3 NaCl (iii) 10 -2 NaCl (iv) 10 -4 Urea |
(iii)>(ii)>(i)>(iv) |
| 3 | The correct decreasing order of electronegativity is | F>Cl>Br>I |
| 4 | C 6 H 6 -NO 2 reacts with (i) Sn/HCl, (ii) NaNO 2 /H 4 , (iii) CuCl/H 4 , and (iv) Na/dryether. Find the molecular weight of A. | 154 gm/mole |
| 5 | Which of the following has the maximum size out of Al 3+ , Mg 2+ , F - , Na + ? | F - |
| 6 | How many compounds have linear shape SO 2 , BeCl 2 , N 3 - , I 3 - , NO + 2 , NO 2 ? | 4 |
| 7 | CO 2 (g) + C(s) → 2CO(g) If initial pressure of CO 2 is 0.6 atm and after equilibrium is established, total pressure is 0.8 atm. Then, find K p . |
0.4 atm |
| 8 | Calculate Number of stereoisomers of  |
4 |
| 9 | Which of the following acids is also known as Vitamin C? | Ascorbic Acid |
| 10 | An electron of He + is present in 3rd excited state. Find its de-Broglie wavelength. | 6.64λ |
| 11 | Which of the following lanthanide ion as 7e - in the outermost shell? | Gd +3 or EU +2 |
| 12 | 4f 7 configuration is possible for: (a) Eu 3+ , (b) Eu 2+ , (c) Gd 3+ , (d) Tb 3+ , (e) Sm 2+ |
(b) and (c) |
| 13 | Given: NH 2 COONH 4 (s) → 2NH 3 (g) + CO 2 (g) If the partial pressure of CO 2 gas at equilibrium is 0.4 atm and the total pressure is 1 atm, then the value of K p at the same temperature is |
0.144 atm 3 |
| 14 | CO 2 gas is taken at 1 atm, 273K. Now it is allowed to pass through 0.1 M Ca/(OH) 2 aq. Solution. Excess amount of Ca(OH) 2 is neutralised with 40 mL of 0.1 M HCl. Then find volume of Ca(OH) 2 initial taken if half of the amount Ca(OH) 2 is reacted with CO 2 . | 40 mL |
| 15 | In a closed insulated container, a liquid is stirred with a paddle to increase the temperature, which of the following is true? | ΔE=w≠0, q=0 |
| 16 | Match the column and choose the correct option- (A) Electronegativity - (1) B<C<N<O (B) Cationic Size - (2)Li>Mg>Be (C) Metallic Character - (3) K>Mg>Al (D) Electron Affinity - (4) Cl<F<Br<I |
A-1, B-2, C-3, D-4 |
| 17 | In Carius method 180 mg of organic compound gives 143.5 mg of AgCl. Find the percentage of Cl in the organic compound. (Nearest integer) | 20 |
| 18 | Two ampere current is allowed to pass through molten AlCl 3 for 30 min. Find the mass of aluminium deposited in mg at cathode. (Nearest integer) | 336 mg |
| 19 | IUPAC name of  |
2-methyl-3-methoxycarbonyl butanoic acid |
| 20 | Compare splitting energy for (i) K 4 [Fe(CN) 6 ] (ii) [Cu(NH 3 ) 4 ] +2 (iii) K 4 [Fe(SCN) 6 ] (iv) [Fe(en) 3 ]Cl 3 |
(ii)>(i)>(iv)>(iii) |
JEE Main 22 January 2025 Physics Shift 1 Question Paper with Answer Key Solutions
Here is JEE Main 22 January 2025 Physics question paper with answer key solutions for Shift 1
| Q.No. | Question | Answers |
| 1 | Find the dimensions of B/μ0. | [AL -1 ] |
| 2. | Solid sphere of mass M, radius R, exerts force F on a point mass. Now a concentric spherical mass M/7 is removed. What is new force? | 6 F
7 |
| 3. | From a sphere of mass M, and radius R, a cavity of radius R/2 is created. Find the moment of inertia about an axis passing through the centre of sphere and cavity. | 31 MR 2
80 |
| 4. | Find the radius of curvature of the common surface of two bubbles (R 1 >R 2 ) | (R1R2)/(R1−R2) |
| 5. | Ice at - 10 degrees Celcius is to be converted into steam at 110 degrees Celcius. Mass of ice is 10 -3 kg. what amount of heat is required? | ∆Q= 730cal |
| 6. | Find out the equivalent capacitance for the situation shown in figure. | C eq = A e0 /d (2k 1 + 2k 2 + k 2 + K 3 + K 3 + K 1 ) /2 (K 1 + K 2 ) |
| 7. | From the given option, identify the diode connected in forward bias. |  |
| 8. | Radius of electron in ground state for hydrogen is a 0, then radius of electron in He + ion in 3rd excited state is a. Then a 0 /a is | 1/8 |
| 9. | A charge of value q is placed at the edge of an imaginary cube of side a as shown in the figure. Find the net flux through the cube. | q/6E 0 |
| 10. | A closed organ pipe in 9th harmonic resonates with 4th harmonic of open organ pipe [1 closed = 10 cm] | L 0 = 80/9 cm |
| 11. | A capacitor is charged by battery to charge Q 1. Now the battery is disconnected and dielectric slab of dielectric constant K is inserted between the gaps of the plates. Now charge on capacitor is Q 2. Find Q 1 /Q 2 | 1 |
| 12. | If whole YDSE apparatus is immersed in a liquid of R1 (μ), then what is the effect on fringe width? | Fringe width decreases |
| 13. | Two spherical black bodies of radius 0.8 m and 0.2 m are at temperatures of 400 K and 800 K respectively. Find ratio of rate of heat loss. | 1 |
| 14. | The particle shown in figure is just able to complete the vertical circular motion. Find the ratio of kinetic energy at A to the kinetic energy at B. | 2:1 |
| 15. | Which of the following graphs correctly represents the variation of resistivity (ρ)? with Temperature (T)? |  |
| 16. | Light of wavelength 550 nm is incident an surfaces of cerium and lithium. Work function are respectively 1.9 eV & 2.5 eV. Then, electron will be ejected from? | Cerium only |
| 17. | The current drawn from battery in the circuit shown below is ______ A. |
0.9 Ω |
| 18. | The equiconvex lens shown in figure is silvered on one side. For what distance of object from the lens is the image formed on the object itself? |
R
2μ-1 |
| 19. | The figure shows an electron entering the space between the plates of a parallel plate capacitor with an initial velocity, v x = 10 6 m/s parallel to the plates. If the length of the plates is /= 10 cm and the electric field in the region E= 9.1 N/C, then the value of v y when the electron comes out of the plates is (Electronic mass = 9.1 x 10- 31 kg)? |
1.6 x 10 5 m/s |
| 20. | Find the equivalent power of the thin lens combination shown in the figure. |
- (R 1 + R 2 )
(6R 1 R 2 ) |
JEE Main 22 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 | Answer |
| 1 | The shortest distance between the lines (x - 1)/2 = (y - 2)/3 = (z - 1)/4 and (x + 2)/7 = (y - 2)/8 = (z + 1)/2 | 88/√1277 |
| 2 | In a bag there are 6 white and 4 black balls two balls are drawn at random, then the probability that both ball are white are | 1/3 |
| 3 | If A be a 3 x 3 square matrix such that det(A) = -2. If det(3 adj(-6 adj(3A))) = 2 n x 3 m , where m ≥ n, then 4m + 2n is equal to | 104 |
| 4 | If a 1 , a 2 , a 3 ..., a n are in geometric progression such that a 1 a 5 = 28, a 2 + a 4 = 29, then the value of a 6 is | 784 |
| 5 | Let A = {1, 2, 3}. Then number of non-empty equivalence relations from A to A are | 5 |
| 6 | If f(x) = 16(sec -1 x) 2 + (cosec -1 x) 2 . Then the maximum and minimum value of f(x) is respectively | 1105π 2 /68 and 4π 2 /17 |
| 7 | If 8 = 3 + (1/4)*(3+p) + (1/4 2 )*(3+p 2 )+ ... ∞, then the value of p is | 16/5 |
| 8 | If dx/dy + x/y 2 = 1/y 3 and x(1) = 1. Then find the value of x (1/2). | 3 - e |
| 9 | Let T r = [ (2r - 1) (2r + 1) (2r +3) (2r + 5) / 64 ], then find the value of lim (n→∞)∑ n r=1 (1/r r ) | 32/45 |
| 10 | Coefficient of x 2012 in the expansion of (1-x) 2008 (1 + x + x 2 ) 2007 | 0 |
| 11 | If the mirror images of the points A(1, 3), B(3, 1) and C(2, 4) in the line x + 2y = 4 are D, E and F respectively, then the centroid of the triangle DEF is | (2/5, -1/5) |
| 12 | If A = {1, 2, 3, ...., 10} and B = {m/n. m,n∈ A, m<n and gcd of (m, n) = 1}. Then find the total number of elements in set B. | 31 |
| 13 | How many ways are there to select 5 letters from English alphabets such that M is in the middle of the letters if repetition is not allowed. | 25 C 4 |
| 14 | Let |z i | = 1 ∀ i = 1, 2, 3 satisfying | z̄ 1 z 2 + z̄ 2 z 3 + z̄ 3 z 1 | 2 = a + b√2, where a, b are rational numbers such that arg(z 1 ) = π/4, arg(z 2 ) = 0 and arg(z 3 )=-π/4, then ordered pair (a, b) is | (5, -2) |
| 15 | Let a coin is tossed thrice. Let the random variable X is tail follows a head and the mean of X is µ and variance is σ 2 respectively. Then 64 (μ + σ 2 ) is | 48 |
| 16 | Let g(x) = 3 f(x/3) + f(3 - x) ∀ x ∈ (0,3) and f"(x) > 0 ∀ x ∈ (0,3), then g(x) decreases in interval (0, α), then α is | 9/4 |
| 17 | Let b = λî + 4k, a > 0 and the projection vector of b on a = 2î + 2j - k is c. If l a + c | = 7, then the area of the parallelogram formed by vectors b and c is (in square units) | 32 |
| 18 | Let the parabola y = x 2 + Px - 3 cuts the coordinate axes at P, Q and R. A circle with centre (-1,-1) passes through P, Q and R, then the area of triangle PQR is (in square units) | 3/2 |
| 19 | If the circle (x - 2√3) 3 + y 2 = 12 and parabola y 2 = 2√3x intersects at P, Q and R. Then the area of triangle PQR is | 12 sq. units |
| 20 | A hyperbola with foci (1, 14) and (1, -12) passes through the point (1, 6). The length of the latus rectum of the hyperbola is | 288/5 |
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