Dear Aspirant,

For JEE Mains there are topics in each subject which have more weightage , one can prepare those very well but in order to achieve a good percentile and rank one should not leave large amount of chapters ,

check out these :

https://engineering.careers360.com/articles/most-important-chapters-of-jee-main

https://engineering.careers360.com/articles/most-easy-and-scoring-chapters-for-jee-main

Generally every year nearly 12 lakh candidates appear for JEE Mains.

If less number of students apply it would affect the marks vs percentile system as compared to these few year as from 2019.But again JEE Mains is conducted now in different slots and percentile is heavily affected by how the pool of people with you performed in that particular paper, so it wouldn't affect much.

Check out this:

https://engineering.careers360.com/articles/jee-main-marks-vs-percentile

Also these might help in preparation:

https://engineering.careers360.com/articles/jee-main-preparation-tips

https://learn.careers360.com/knockoutfull-jee-main-april/

Hi Aspirant,

See if the number of students appearing is low in JEE Main then the cutoff would be in the favour and it would be low as competition will lower down a bit.However practically it do not brings that much difference.A total of 6,20,978 candidates have appeared for JEE Main 2021 February session, while for the March session 5,56,248 candidates have appeared.Now the cutoff will decrease as there are 4 rounds these years.However you may leave out 1-2 chapters but you can crack with remaining chapters if you have good knowledge.However cracking only is not enough you need to maintain good percentile to get admissions in good colleges.

Hope it helps!!