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18th March Shift 1 JEE Main 2021 Question Paper Solutions (Free PDF Download)

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Download JEE Main 2021 Question Paper Solutions for 18 March Shift 1 PDF

If you’re looking for the Question paper of 18th March Shift 1 JEE Main 2021, we’ve got you covered. Download the question paper with solutions and answer keys for JEE Main 2021 17th March Shift 1 papers, available for free on this page.

Candidates who are planning to prepare for the next JEE Main Examination should learn and anticipate the type of questions asked in all the subjects of JEE Main 2021. Candidates should dig into the kind of questions from a topic or concept and refine their approach towards a question accordingly.

Our Master teachers and Academic experts curate the solutions in the PDF to aid students and bridge the gap in understanding the nature of the JEE Main exam. The comprehensive guidance for approaching a question is available for 18th March Shift 1 JEE Main 2021.

Don’t wait to grab the Question paper with solutions for 18th March Shift 1 JEE Main 2021. Use the PDF to analyse and solve each question. Also, don’t refrain from revising the PDF. Make them part of your preparation and use them as your polar star for JEE Main journey.

Last updated date: 21st Sep 2023
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Download JEE Main 2021 Question Paper Solutions for 18 March Shift 1

Major Highlights of JEE Main 2021- Shift 1 (18 March)

  • The difficulty level of JEE Main 2021 exam- Shift 1 (18 March) was moderate.

  • The difficulty level of the Mathematics section was tough to moderate. The questions were quite lengthy. The section was balanced and equal weightage was given to both Class 11 and Class 12 syllabus.

  • The difficulty level of Physics questions was moderate. Most of the questions were theoretical and formula based. Only a few questions were of advanced level. Questions were almost asked from all the chapters of NCERT Class 11 and Class 12 syllabus.

  • The difficulty level of the Chemistry section was easy. The questions were directly asked from the Chemistry textbook. Only a few questions were lengthy.

JEE Main 2021- Shift 1 (18 March)- Question Paper Analysis

Overall Question Paper Difficulty Level


Difficulty Level of Mathematics

Moderate To Difficult

Difficulty Level of Physics

Easy To Moderate

Difficulty Level of Chemistry


Chapters with More Weightage In Mathematics

  • Functions

  • Coordinate Geometry

Chapters with More Weightage In Physics

  • Modern Physics

  • Mechanics

Chapters with More Weightage In Chemistry

  • Physical Chemistry

  • Organic Chemistry

Difficulty Level of Numerical Questions


Expected Number of Good Attempts


Difficulty Level - Feb 26th Shift 1 - March 17 Shift 2

Almost Similar Difficulty Level

Division of Questions

Check out section-wise difficulty level of questions in JEE Main Shift 1 (18 March)


Easy Questions

Moderately Difficult Questions

Difficult Questions














Physics Chapter-Wise Weightage in JEE Main 18 March Shift 1



Heat & Thermodynamics




Modern Physics




SHM & Waves


Chemistry Chapter-Wise Weightage in JEE Main 18 March Shift 1

Inorganic Chemistry - I


Inorganic Chemistry - II


Organic Chemistry - I


Organic Chemistry - II


Physical Chemistry - I


Physical Chemistry - II


Math Chapter-Wise Weightage in JEE Main 18 March Shift 1

Binomial Theorem


Complex Numbers


Coordinate Geometry


Differential Calculus


Integral Calculus


Permutation And Combination


Sequence and Series


Vector & 3D






Matrix & Determinants


Fundamental of Mathematics


JEE Main Syllabus 

The candidates are evaluated on their knowledge of Physics, Chemistry, and Mathematics. We shall take a look at the syllabus for each section in a detailed manner.






Year-Wise JEE Main Previous Year Question Papers

FAQs on 18th March Shift 1 JEE Main 2021 Question Paper Solutions (Free PDF Download)

1. What are the most important topics for Maths in the JEE Main Question paper 2021?

The Maths section of the JEE Main paper is considered to be the toughest of all sections. However, with the right guidance and consistent hard work, students can fare well in Maths too. Calculus and trigonometry are particularly important. Calculus is an integral part of engineering. Students should solve advanced integration problems from reputed textbooks to get their concepts cleared. Several questions are asked from mathematical reasoning and probability too. In addition to this, topics like statistics and geometry cannot be skipped either. These topics make up the bulk of the JEE Main Maths paper. 

2. How many sessions is the JEE Main 2021 conducted in?

Earlier, most national exams were held annually. However, this created undue pressure on students. For the past few years, the National Testing Agency (NTA) has decided to hold the JEE Main exam in sessions. As of now, the entrance examination is held in 4 sessions. One session is conducted in early February, one in March, one in April, and one in May. Students can opt to attempt all 4 sessions. Their rank will be decided according to the highest score obtained by them in any one of the 4 sessions. This gives students ample opportunity to do well and also relieves some of the pent up stress in their minds.

3. How many questions are asked in the JEE Main 2021 Question Paper?

The NTA is the governing body of the JEE Main examination. The Agency decides the pattern of the paper and allocates marks for each section. In JEE Main Question Paper 2021, Paper 1 is for admission to engineering courses. It will consist of 90 questions in total. 20 questions will be asked in section A and 10 questions will be asked in section B. Students will not be expected to answer each question in the question paper. They will be expected to attempt a total of 75 questions. These 75 questions will consist of 20 questions in section a and 5 questions in section b for each subject: Physics, Chemistry, and Maths.

4. How can students use the JEE Main Question Paper 2021 to improve their preparation for JEE Main?

The preparation for an exam like JEE Main must be consistent. Every year, lakhs of students compete for a spot in one of prestigious engineering colleges by cracking JEE Main. To gain an advantage over the other students in the exam, one should attempt to solve JEE Main question papers from previous years. All of the highest performers advise students to practise with previous year's question papers in order to improve their exam preparation. You can start your previous year question papers from 18th March Shift 1 JEE Main 2021 Question Paper Solutions which is available for free in PDF format.

5. Which section in Chemistry carries the most marks in JEE Main Question Paper 2021?

Chemistry in classes 11 and 12 is divided into 3 sections: Physical, Inorganic, and Organic Chemistry. However, equal weightage has to be given to all the 3 sections. In the 18th March Shift 1 JEE Main 2021 Question Paper Solutions, Organic Chemistry carried 10-12 questions, Inorganic Chemistry carried 8-10 questions,  Physical Chemistry  carried 9-10 questions.