Appearing for JEE Main 2021? Read to know the common mistakes to avoid while preparing for JEE Main 2021.
JEE Main is the exam that needs a specific preparation strategy on students’ part but at the same time they do not end up doing anything that may reduce their chances of qualifying for the exam.
There are some common mistakes the students make while preparing for the exam that may result in a lower JEE Main score and further lead to admission to a course or institute that they do not wish for. Along with the IIT JEE Main preparation strategy, it’s equally important to pay attention to common mistakes candidates make while preparing for the exam. Hereunder, shiksha.com brings in for students some common mistakes to avoid while preparing for JEE Main 2021 exam. Avoiding these mistakes will help students considerably increase their JEE Main scores and level up their ranks by not making the following mistakes.
Explore colleges based on JEE Main
1. Measuring Study Time by the Number of Hours
More study hours do not guarantee better preparation. The time spent studying qualitatively matters far more than the quantity. If students want a good rank in JEE Main, they first need to make realistic targets for every day. Completing daily targets will motivate students and make their study sessions more purposeful.
2. Keeping Chemistry Aside
Most of the students feel that chemistry is boring especially inorganic and some parts of organic. However, this attitude will lower the score of students in the JEE Main. Chemistry can be a scoring section and it can be solved tentatively in around forty minutes or even lesser. This will give students more time for the other sections. So, candidates should never ignore this subject while preparing for JEE Main.
3. Not Using the NCERTs
Students are familiar with various reference books, but they should never neglect the NCERT textbooks. These books will give help aspirants cover the entire JEE Main syllabus in simple terms. Candidates should never hesitate to open and refer to the NCERT textbooks. Students must keep in mind that the NTA will never cross the boundaries of the syllabus beyond NCERT books.
4. Working More on Already Prepared Topics
Candidates must never limit their preparation to the already well-prepared topics. Students must remember that the JEE Main paper will not include questions only from those topics. One should focus on all the topics along with the important ones. This is the same for all the subjects.
5. Keeping the Doubts Alive
Try not to have any doubts about any topics at this phase of your preparations, it will only increase students’ stress. Try to solve any doubt as early as possible. Aspirants should never hesitate their doubts even in the last days.
6. Ignoring Revision
The success in entrance examinations like JEE Main depends mostly on a candidates approach towards preparation during a few days before the exam. However, last days of your preparation must include revisions and mock tests. It is good to practice as many questions as possible during the last days, but it should not revisions. Students must revise whatever they have studied in the last year.
7. Referring New Study Material
All the experts and toppers suggest that students should never read any new study material in the last days of their preparations. It is good if candidates have started referring to new study materials and books at an early stage, but not during the last days. Reading new study material will just increase your anxiety on exam day.
8. Not Attempting Mock Tests
Undeniably, sitting for more than three hours for a single paper is a big task for students. One can handle it by taking full-length mock tests during the last days of their preparations. The JEE Main mock tests will also help students know their preparation levels. Students must dedicate an entire week to mock tests to become familiar with the JEE Main exam pattern.
9. Motivating Yourself
Success in JEE Main will be the biggest moment for any student. Candidates must prepare for the exam while keeping this thing in their mind. It will keep the aspirants always motivated by telling yourself that JEE Main will help students land at the doors of IITs, NITs or IIITs.
Common Mistakes to Avoid at the JEE Main Examination Centre
Students must avoid the following mistakes at the exam centre:
- Reaching exam centre late
- Forget to carry JEE Main admit card with affixed photograph.
- The photograph on the admit card should be the same as the one submitted in the JEE Main application form
- Forget to take a postcard size photograph
- Carrying bared items in the examination hall
- Wasting a lot of time on difficult questions
- Students must try to avoid all the above mistakes as it will help them to prepare well for the exam as well as avoid stress during the exam.
| Practice with JEE Main Sample Papers | JEE Main 2021 Mock Tests |
News & Updates
Explore Other Exams
Apr '26 | JEE Advanced 2026 registration... |
Apr '26 | JEE Advanced 2026 practice tes... |
Jan '26 | BITSAT 2026 application form -... |
May '26 | BITSAT 2026 application form -... |
Oct '25 | SRMJEEE 2026 Notification |
Feb '26 | COMEDK application form 2026 |
May '26 | COMEDK exam date 2026 |
Jan '26 | WBJEE 2026 application form |
Feb '26 | WBJEE 2026 application form co... |
24 Oct '25 - 31 Mar '26 | VITEEE 2026 application form |
Apr '26 | VITEEE 2026 Mock Test Release ... |
Dec '25 | MHT CET 2026 Application Form |
Apr '26 | MHT CET 2026 Admit Card |
Student Forum
Answered 3 days ago
Definitely, along with LPUNEST, LPU accepts JEE (main) and CUET for B. Technical courses. The candidates can apply through any of these entrance tests and will be granted admission on the basis of valid scores, eligibility criteria, and counselling processes. The candidates would have flexibility an
S
Contributor-Level 10
Answered a week ago
Well, becoming a rocket scientist is a long-term commitment, and it depends on your education path and goals It takes almost 5 to 6 years with a bachelor's and 8 to 12 years if you want to study higher. Here below is how long it usually takes:
- Bachelor's degree: You have to study aeronautical enginee
M
Beginner-Level 2
Answered a week ago
Who work on the rocket-propelled vehicles, they apply the principles of Mathematics, Physics, and Material Science to solve challenges related to these vehicles. Rocket Scientists are involved in the process of design and development of the vehicles such as small drones, satellites, and commercial a
L
Beginner-Level 2
Answered a week ago
Yes, this field is considered hard. It is complex and demands high precision. There can be extreme consequences for minor errors. The overall field is extremely challenging as it requires to apply the basic scientific principles to design and develop rockets. It requires sophisticated engineering wi
P
Beginner-Level 2
Answered a week ago
The following are the qualification which can help you to become a rocket scientist:
· Bachelor's Degree such as B.Tech/B.E can take up to four years to complete.
· You can do a two years Master's Degree M.Tech/M.E./M.S. after graduation.
· For advanced level study in this field, you
C
Beginner-Level 2
Answered 2 weeks ago
Yes, it is quite achievable to get the ECE specialisation at IIITDM Kancheepuram with a rank of 7000 in JEE Main 2025 for the General AI category. Generally the closing ranks should range between 23099 to 29987. However the cutoff may vary depending on category. One can view the First and Last round
C
Contributor-Level 10
Answered 2 weeks ago
Can you please confirm what you mean by “2027 mock test” — do you mean:
- BPSC 2027 Mock Test Series (for your upcoming exam prep)?
- Or a general mock test for 2027 government exams (like UPSC, SSC, Banking, etc.)?
- Or are you referring to a specific subject/year 2027 question paper mock (e.g., “BPSC 20
S
Beginner-Level 4
Answered 3 weeks ago
With a 300 SC category rank in CAT, your chances for NIT Trichy MBA are relatively high. Based on 2025 data, NIT Trichy generally shortlists SC candidates with CAT percentiles around 60-65. To achieve a 300 rank under SC category, you would need about a 65-70 percentile, or a score of roughly 60-65
A
Contributor-Level 10
Answered a month ago
Honestly, going for CSE at Chandigarh University with your score sounds like a solid choice. I'm saying this because CU has become a hub for tech placements and internships, and the environment is pretty competitive in a good way. Your 88 percentile in JEE Main could also land you a scholarship, whi
Exam On - 21 Jan '26 - 30 Jan '26
Does LPU accepts JEE Main or CUET for BTech admission?