JEE Main 2026 21 Jan Shift 1 Unofficial Answer Key PDF – Physics, Chemistry, Maths
Share
The JEE Main 2026 exam for 21 January Shift 1 was conducted in the morning session from 9:00 AM to 12:00 PM. The JEE Main 2026 unofficial answer key for Physics, Chemistry, and Mathematics has been released by PW based on memory-based questions compiled by subject experts and student feedback. Subject-wise PDFs are available for download for quick reference.
JEE Main 2026 21 Jan Shift 1 Answer Key – Subject-Wise PDFs
Candidates can now check the subject-wise unofficial answer key PDFs by Physics Wallah for Physics, Chemistry, and Mathematics to verify their responses before the official answer key is published by NTA. The unofficial answer key PDFs are prepared using recalled questions and standard solutions. These files help students perform early answer verification.
JEE Main 2026 21 Jan Shift 1 Physics Answer Key
The Physics section answer key is prepared using recalled questions from candidates who appeared in the exam.
Physics Unofficial Answer Key PDF (Available Soon)
This PDF helps in checking responses from topics such as Mechanics, Current Electricity, Magnetism, Modern Physics, and Semiconductors.
JEE Main 2026 21 Jan Shift 1 Chemistry Answer Key
The Chemistry unofficial key covers Physical, Organic, and Inorganic sections. It includes memory-based solutions for numerical and conceptual questions asked in the exam.
JEE Main 2026 21 Jan Shift 1 Mathematics Answer Key
Mathematics solutions are compiled carefully using student-reported questions. This PDF is useful for verifying answers from Coordinate Geometry, Calculus, Algebra, and Vectors & 3D Geometry.
How to Use JEE Main Unofficial Answer Key
-
Match each question ID with your response
-
Verify the selected option with the unofficial key
-
Keep your response sheet open while checking
-
Mark doubtful answers separately
-
Do not assume final score accuracy
-
Wait for the official key for confirmation
Difference Between Official and Unofficial Answer Key
Candidates should always rely on the official NTA answer key for final evaluation.
| Unofficial Answer Key | Official Answer Key |
| Prepared by experts using memory-based questions | Released by NTA |
| Available on exam day | Released after 2–3 days |
| Used for early self-checking | Used for final score calculation |
| May contain minor variations | Final authority |
How to Calculate Scores using the JEE Mains 2026 January 21 Shift 1 Answer Key?
Candidates can calculate the probable score they will secure in the exam based on the January 21 shift answer key. Here is the JEE marking scheme.
| Types of Responses | Marking Scheme |
| Correct Response | +4 marks awarded |
| Incorrect Response | -1 marks deducted |
| No answer | No marks |
| Marked for review | No marks |
Probable Score = (No. of correct answers x 4) - (No. of incorrect answers)