Hi

Yes, with 80% marks in your class twelfth board examination you are definitely eligible for NITs and IITs  and it is it doesn't matter even if you  have only 60 marks i. e 60% in maths

This is because,

To check your eligibility for IIT and NITs your overall marks is considered for calculating percentage with 5 subjects i. e PCM, a language and any other subject. To be eligible for NITs, IITs, a general category student requires at least 75% in aggregate in 12th.There's no seperate minimum%  requirement in MATHS..

Moreover,

This year i. e 2022, minimum percentage barrier of 75% to be eligible for NITs  etc and IITs is not there

Admission in NITs, IIITs, CFTIs is through jee main & in  IITs through jee advanced

For your reference,

Eligibility criteria of both is given below:-

>>>>>>>>> JEE MAIN

Jee main eligibility criteria is given below-

---------------------------) Qualification required :- to be eligible  for JEE mains you need 10+2/equivalent qualification from a recognised board.

-------------------------) Passing year :- one is eligible for JEE main examination for consecutive three years starting from the year of appearing for 12th /equivalent examination i. e to be eligible  for JEE mains 2022 you should be either appearing for 12th board exam or equivalent  in 2022 or should have passed it in 2021 or 2020

-------------------------) There is no age limit to be eligible

-------------------------) there is no minimum percentage requirement to be eligible for JEE Main for BE /Btech.

But yes,

To be eligible for BE/BTech  in NITs, IIITs, CFTIs one needs at least 75% marks in class 12th if belongs to General or OBC category  or at least 65% marks in class 12th if belongs to Sc or St category or needs to be in top 20 percentile of their board examination.

IMPORTANT NOTE :-  This minimum percentage barrier of 75 % - 65% for NITs, IIITs, CFTIs  is not there for jee main 2022 . It means to be eligible all you need to be eligible is to have at least passed 12th .

For detailed information about jee main eligibility criteria  go through our page, the link for which is provided below

https://engineering.careers360.com/articles/jee-main-eligibility-criteria

>>>>>>>>>> JEE ADVANCED

JEE  advanced eligibility criteria is given below :-

---------------------) Qualification required :- One needs to pass 10+2/ or equivalent with the following 5 subjects:-

• Physics

• Chemistry

• Mathematics

• A language

• Any subject other than listed above

Those appearing for 10+2/equivalent are also eligible.

---------------------) Minimum marks in 12th /equivalent :-  you need to pass your class 12th with at least 75% marks in aggregate in class 12 if belong to general or obc category or at least 65% marks if belongs to SC/ST or must be in the top 20 percentile in class 12 examination.

† †† IMPORTANT NOTE :-  The minimum percentage barrier of 75 % - 65% is not there  for jee advanced 2022. It means all you need to be eligible is to have at least passed 12th .

----------------------) 12th /equivalent passing year :-  You can give JEE advanced examination for the maximum of consecutive 2 years starting from the year of appearing for your 12th examination i. e to be eligible for JEE advanced 2022 your 12th board examination appearing year should be either 2022 or 2021

††† IMPORTANT NOTE:-

Considering pandemic, there's one time measure for students who had passed 12th in 2021 & 2020.

• For 2021 passed :- Those 2021 passed students who had qualified jee main 2021 and had registered for jee advanced 2021 but couldn't appear in the examination are directly eligible for jee advanced 2022 without appearing in jee main 2022.

• For 2020 passed :- 2020 12th passed students are also eligible for  jee advanced 2022 after qualifying jee main 2022 provided they have appeared in only one of 2020 or 2021 jee advanced or none of them.

Details about it is available at:- https://news.careers360.com/jee-advanced-2022-extra-attempt-iit-entrance-exam-candidates-who-missed-in-2020-2021-jeeadv-ac-in

-----------------------) There is upper age limit, according to which to be eligible for jee advanced 2022, you should be born on or after 1st October 1997. There is 5 years of age relaxation for SC, ST and PwD so candidates of SC/ST /PWD needs to be  born on or after October 1, 1992.

-----------------------) you must qualify JEE main  2022 to be eligible for jee advanced 2022.

To give you an idea of the jee main qualifying cut off percentile to be eligible for jee advanced,  jee main 2021 cut off percentile to be eligible for jee advanced 2021 is given below :-

• general :-87.8992241 percentile

• EWS:- 66.2214845 percentile

• OBC-NCL :- 68.0234447 percentile

• SC :- 46.8825338 percentile

• ST:- 34.6728999 percentile

• PWD :- 0.0096375 percentile

You can get the detailed below information about jee advanced eligibility criteria by visiting our page the link for the same is provided below

https://engineering.careers360.com/articles/jee-advanced-eligibility-criteria

Thank you