I will be 16yr old in july 2018 am i eligible for NIT'S. And other national level btech college's like bits,IIIT , CUSAT etc.

You may apply for other exams as well.

Yes - BITS - Read More: http://bitsadmission.com/Eligibility_Criteria.aspx

CUSAT -Read More: http://www.cusat.ac.in/Prospectus2016.pdf (PAGE:20)

Yes, you are eligible for NITs, IIITs and CFTIs but you have to apply for JEE Main and qualify the entrance test, which is the gateway for admission to NITs, IIITs and CFTIs. As per the eligibility criteria of JEE Main 2018 (To apply for JEE Main 2018), General Category candidates must be born on or after October 1, 1993, while reserved category candidates should be born on or after October 1, 1988. You are in anyway born after these dates/years. So, you are eligible. If you will be turning 16 by July 2018, then your date of birth is July 2002.

For BITSAT 2018, there is no age criteria, but you should have cleared or appearing in class 12th/equivalent in 2017 or 2018 only with 75% aggregate marks in PCM and 60% individually in all of these PCM subjects separately. Proficiency in English is another requirement for appearing in BITSAT 2018.

For CUSAT CAT 2018 also there is no age limit or eligibility related to age, however, for different B.Tech programmes, CUSAT CAT 2018 has different eligibility criteria. So, check complete details from this link - CUSAT CAT Eligibility Criteria 2018

Hey Harsh,

Yes, you are eligible for NIT's.

JEE 2018 - Age Limit: Candidates whose date of birth falls on or after 1st October, 1993 (for general and OBC candidate) are eligible to apply.

Note:Date of birth will be considered as mentioned in the Secondary Education Board/ University certificate.

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