JEE Main Session-1 Exam 2026: 28 Jan Shift-1 Analysis, Review & Question Paper with Answer Key

JEE Main 2026 January 28 Shift 1 exam is over now. JEE Main 2026 January 28 Shift 1 student feedback and analysis is updated here. Additionally, the memory-based unofficial JEE Main 2026 answer key and question paper with solutions for the January 28 exam are also uploaded.

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Candidates can check the responses of JEE Main January 28, 2026, Shift 1 students, the difficulty level of questions, paper analysis, a memory-based question paper with answer key and solutions, etc.

Shift 2 will start at 03:00 AM and end at 06:00 PM. Candidates will have to show their JEE Main 2026 Session 1 admit card to enter the JEE Main 2026 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 2026 will be held on January 21, 22, 23, 24, and 28. Paper 2A and 2B for BArch and BPlan candidates are scheduled on January 29, 2026, from 9:00 AM to 12:30 PM.

👉 JEE Mains 2026 (28 January Shift-1 Physics) Question Paper and Answer Key

👉 JEE Mains 2026 (28 January Shift-1 Chemistry) Question Paper and Answer Key

👉 JEE Mains 2026 (28 January Shift-1 Mathematics) Question Paper and Answer Key

JEE Main Session 1 Memory-Based Paper 2026

JEE Main 2026 January 28 Shift 1 - Overall Paper Analysis

• Physics took the most time. The level of the physics section was moderate. candidates could complete the section in almost 1 hour.
• Overall paper was moderate and very lengthy
• Maths was moderate to lengthy.
• Chemistry was moderate, and candidates took 1 hour to solve this section.
• There were some technical glitches in the exam.
• Candidates struggled with time management. Many candidates were not able to attempt questions in Maths as physics and chemistry took most time.
• This shift was easier than the Jan 23 shift 2; however, the difficulty level was almost moderate to difficult.
• In maths, questions came from 3d and vectors, ellipses, circles, AP, GP, Matrix, differential equations, and integration.
• In chemistry, questions were asked about coordination compounds, the d-block, and zero error.
• In physics, questions came from ray optics, electrostatics, semiconductors, SHM, current electricity, rotation, moment of inertia, fluid mechanics, Potentiometer, vernier calliper, and thermodynamics.

JEE Main 28 January Shift 1 - Subject-wise Difficulty Level

Quick Difficulty Comparison Table

JEE Mains 2026 28 Jan: Questions in shift 1 paper

The overall difficulty level of the JEE Mains 2026 day 4 shift 1 exam was moderate. The JEE main 2026, 28th Jan morning shift was easy as compared to the Jan 23 shifts, as per subject experts. 

Here are the questions asked in PCM section of the JEE Mains 2026 day 4 shift 1 exam.

JEE Mains 2026 28 Jan Shift-1 : Maths

• The overall difficulty level of the Mathematics section in this shift was moderate to difficult.

• This shift’s Maths section had lengthy questions. Several questions needed careful calculation, which made proper time management very important.

• The Maths section in this shift was relatively tougher than physics and chemistry.

• The difficulty level was comparatively more difficult than the shifts happened till now, i.e., (21–24 January).

• Overall, the maths section can be best described as moderate, lengthy, yet doable with precise calculations and speed.

• The question paper pattern remained constant with other shifts.

• The average time taken for Mathematics was approximately 70–80 minutes.

• The mathematics section tested both the conceptual understanding and calculation skills.

Questions were from the following important topics:

• 1 Question from Sets, Relations, and Functions

• 1 Question from Matrices & Determinants

• 3–4 Questions from Vector Algebra and Three-Dimensional Geometry

• 2 Questions from Integral Calculus

• 2–3 Questions from Conic Sections (1 Ellipse Question, 1 Circle Question)

• 1 Question from the Differential Equation

• 1 Question from Probability

• 1 Question from Statistics (Related to mean deviation)

JEE Mains 2026 28 Jan Shift-1 : Physics

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

• The overall difficulty level of the JEE Main 28th January morning shift Physics section was easy compared to the other shifts.

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

• The average time taken by students to solve physics paper is around 1 hour.

• Students were able to solve around 16–17 questions in the physics paper.

Questions were asked about the following Topics:

• 1 question from modern physics

• 2–3 questions from ray optics (Topic – lens, prism)

• 1 question from electrostatic (Topic – Electric potential energy)

• 1 question from semiconductor (Topic – Diode)

• 2–3 questions from current electricity (Topic – Wheatstone Bridge)

• 1 question from alternating current (Topic – RMS current)

• 1 question from laws of motion (Topic – friction and inclined plane combined)

• 2 questions from rotational motion (Topic – moment of inertia and torque)

• 1 question from mechanical properties of solids (Topic – Young’s modulus)

JEE Mains 2026 28 Jan Shift-1 : Chemistry

• Overall difficult level of Chemistry was moderate.

• The overall difficulty level of the Chemistry section in the JEE Main 28 January morning shift was similar to that of the shifts conducted between 21 and 24 January.

• The Chemistry paper was easy wrt maths and difficult wrt physics sections.

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

• The organic portion had more named reaction questions.

• The chemistry section required almost 55–60 minutes to solve.

• The organic portion was more than the inorganic, and the physical section.

• Organic chemistry was very lengthy.

• Statement-type questions were asked from Physical Chemistry.

Questions were asked about the following Topics:

• 2 questions from Electrochemistry (Nernst Equation)

• 1 question from d-block elements

• 2 questions from Coordination Chemistry (Diamagnetic and Paramagnetic)

• 1 question from Biomolecules

• 2 questions from Chemical Bonding and Molecular Structure

• 1 question from GOC

• 2 questions from Amines

• 1 question from Solutions

• 1 question from Ionic Equilibrium

Expected Marks vs Percentile - JEE Main 28 Jan Shift 1

Based on the moderate and lengthy difficulty level:

Note: Since this shift was lengthy, slightly lower marks may fetch higher percentile compared to easier shifts (due to normalization).