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JEE Main 25th Feb 2021 Shift 1 Question Paper Analysis (Available), Answer Key, Solutions

Sakunth Kumar
Sakunth KumarPublished On: February 26, 2021 | JEE Main

JEE Main February 2021 for B.Tech (Paper 1) has been conducted on February 25. Check the detailed exam analysis of JEE Main 25th February Shift 1 exam along with memory-based questions, solutions and answer key. The overall difficulty level of the paper was moderate. 

JEE Main 25th Feb 2021 Shift 1 Question Paper Analysis, Answer Key, Solutions

The Day 3 Shift 1 of JEE Main 2021 (Phase 1) has been conducted on February 25 from 9:00 AM to 12:00 PM. The exam is for Paper 1, which is conducted for admission in B.Tech. The exam pattern of JEE Main 2021 has been revised, and the question paper has a total number of 90 questions. There are ten numerical questions from each section, and the candidates have to answer any five from each section. The question paper consists of questions from Physics, Chemistry and Mathematics. You can check the detailed JEE Main 2021 exam analysis for the exam scheduled on February 25 (shift 1) here. Also, you can check the memory-based questions & solutions here. JEE Main 2021 response sheet will be released within two days after the exam.

JEE Main 2021 Paper 1 (B.Tech) Answer Key

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JEE Main 25th Feb 2021 Shift 1 Analysis Video

JEE Main 25th Feb 2021 Shift 1 Exam Analysis

The exam analysis of JEE Main 25th Feb 2021 Shift 1 has been updated here. Some students felt that Mathematics was difficult. The Chemistry section had more questions from Organic Chemistry. The question paper nature is almost similar to previous years, and there is equal weightage of questions from Class 11th and 12th syllabus. 16 to 18 questions can be considered as good attempts in each section. If you had taken the exam in this shift, you can share your feedback on Whats App Number 9059528251 or E-Mail ID sakunth.kumar@collegedekho.com

Aspect

Analysis

Overall Difficulty Level of the Exam

Moderate

Difficulty Level of Mathematics

Moderate to Difficult

Difficulty Level of Physics

Easy to Moderate

Difficulty Level of Chemistry

Easy

Topics with More Weightage in Mathematics

  • Vector
  • Permutation & Combination
  • Circle

Topics with More Weightage in Physics

  • KGT & Thermodynamics  
  • Semiconductors 

Topics with More Weightage in Chemistry

  • Organic Chemistry
  • Biomolecules
  • s-Block
  • d-Block and f-Block Elements
  • Chemistry in Everyday Life

Difficulty Level of NAT Questions

Moderate

Expected Average Number of Good Attempts

50-55

Division of Syllabus in JEE Main 25th Feb Shift 1

The division of syllabus in JEE Main 25th Feb Shift 1 is as follows -

Name of the SubjectTotal No. of Questions from Class 11th SyllabusTotal No. of Questions from Class 12th Syllabus
Chemistry1218
Mathematics1119
Physics1513

Physics Chapter Wise Weightage of JEE Main 25th Feb Shift 1

The chapter weightage of Physics in JEE Main 25th Feb Shift 1 exam is as follows -

Name of the ChapterWeightage
Electrodynamics23%
Heat & Thermodynamics10%
Mechanics30%
Modern Physics13%
Optics 10%
SHM & Waves7%

Physics Topic Wise Weightage for JEE Main 25th Feb Shift 1

The topic-wise weightage of Physics in JEE Main 25th Feb shift 1 is as follows -

Name of the TopicTotal No. of Questions
Electromagnetic Field3
Electrostatics2
Electro-Magnetic Induction2
KTG & Thermodynamics3
Rectilinear Motion & Vectors1
Gravitation3
Unit & Dimension1
Elasticity & Viscosity1
Circular Motion1
Work, Power & Energy1
Error in Measurement1
Semiconductors1
Electromagnetic Waves & Communication1
Modern Physics1
Nuclear Physics1
Geometrical Optics & Physical Optics2
Wave Optics1
SHM1
Sound Waves1

Chemistry Chapter Wise Weightage of JEE Main 25th Feb Shift 1

The chapter-wise weightage of Chemistry in JEE Main 25th Feb Shift 1 is as follows -

Name of the ChapterWeightage
Inorganic Chemistry-I13%
Inorganic Chemistry-II13%
Organic Chemistry-227%
Physical Chemistry 127%
Physical Chemistry 213%
Organic Chemistry-17%

Chemistry Topic Wise Weightage for JEE Main 25th Feb Shift 1

The topic-wise weightage for Chemistry in JE Main 25th Feb Shift 1 is as follows -

Name of the TopicTotal No. of Questions
Chemical Bonding2
p-Block (15-16 Grp)2
Coordination Compounds1
Metallurgy1
d-Block & f-Block Elements2
General Organic Chemistry-II1
Hydrocarbon1
Biomolecules1
Polymers1
Alkyl Halide, Alcohol & Ether1
Carbonyl Compounds3
Amines1
Practical Organic Chemistry1
Mole Concept1
Atomic Structure & Nuclear Chemistry1
Thermodynamics & Thermochemistry2
Gaseous State1
Equivalent Concept1
Ionic Equilibrium2
Chemical Kinetics1
Electrochemistry1
Surface Chemistry1
Solution & Colligative Properties1

Mathematics Chapter Wise Weightage for JEE Main 25th Feb Shift 1

The chapter-wise weightage of Mathematics in JEE Main 25th Feb Shift 1 is as follows -

Name of the ChapterWeightage
Complex Numbers3%
Coordinate Geometry13%
Differential Calculus10%
Integral Calculus13%
Permutation & Combination7%
Probability7%
Sequence & Series3%
Vector & b3D10%
Mathematical Reasoning3%
Quadratic Equation3%
Trigonometry3%
Matrix & Determinants10%

Mathematics Topic Wise Weightage for JEE Main 25th Feb Shift 1

The topic-wise weightage of Mathematics in JEE Main 25th Feb Shift 1 is as follows -

Name of the TopicTotal No. of Questions
Complex Numbers1
Ellipse1
Parabola1
Straight Line1
Hyperbola1
Limit, Continuity and Differentiability2
Functions1
Applications and Derivatives2
Definite Integration1
Differential Equation1
Indefinite Integration1
Area under Curve1
Permutation & Combination2
Probability2
Sequence & Series1
Vector2
Three Dimensional Geometry2
Mathematical Reasoning1
Quadratic Equation1
Height & Distance1
Trigonometric Equation1
Matrices & Determinants3

JEE Main 25th Feb 2021 Shift 1 Question Paper & Answer Key

After the exam, we will update the memory-based questions shared by students on Whats App Number 9059528251. The solutions will also be updated on this page.

Name of the Subject

Questions

Mathematics

To be Updated

Physics

  • For a polytropic process whose equation is given by pvn = constant, x is not equal to 0, 1 or ⋎. Which is true? Answer - Molar Seat Capacity (other options given in the question are also correct)
  • A charged solid conductor having a cavity  +q charge. What is the charge given on the outer surface? Answer +q
  • Circular coil of wire consisting of 100 turns each of radius 8.0 cm carries a current of 0.40 A. What is the magnitude of the bat the content of the coil? - Answer 32
  • What is focal length of convex lens when image size is same when object placed at 10 cm or 20 cm?
  • JEE Main 25th Feb Shift 1 Q 6

Chemistry

  • Monomer of Buna S - Answer 1, 3 B & S
  • Which of the linkage is present in Glucose and Galactose present in Lactose? Glycosidic linkage

JEE Main 2021 answer key (official) will be released within two days after the exam. JEE Main 2021 results (Phase 1) will be announced in the first week of March.

Section Wise Difficulty Level of JEE Main 25th Feb Shift 1

The section-wise difficulty level of JEE Main 25th Feb Shift 1 is as follows -

Name of the SectionTotal No. of Easy QuestionsAverageDifficult
Physics16114
Chemistry17103
Mathematics1596

JEE Main February 2021 Exam Analysis (All Shifts)

JEE Main 23rd Feb 2021 Shift 1 Exam AnalysisJEE Main 23rd Feb 2021 Shift 2 Exam AnalysisOverall Exam Analysis of JEE Main 23rd Feb (Day 1)
JEE Main 24th Feb 2021 Shift 1 Exam AnalysisJEE Main 24th Feb 2021 Shift 2 Exam AnalysisOverall Exam Analysis of JEE Main 24th Feb (Day 2)
JEE Main 25th Feb 2021 Shift 1 Exam Analysis - Available on this PageJEE Main 25th Feb 2021 Shift 2 Exam Analysis Overall Exam Analysis of JEE Main 25th Feb (Day 3)
JEE Main 26th Feb 2021 Shift 1 Exam AnalysisJEE Main 26th Feb 2021 Shift 2 Exam AnalysisOverall Exam Analysis of JEE Main 26th Feb (Day 4) 

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