Hi

Btech biotech is 4 year course

You need to choose the code 02.

This is because,

Though you have passed 1st year btech biotech your highest qualification with all the three subjects i. e physics chemistry and Biology /biotechnology remains 10 + 2  .

While, those who have passed 1st year of 3 year degree/graduation course with all the three subject i. e physics chemistry and Biology/Biotechnology needs to select code 5 and those who have completed BSc with at least any two of physics chemistry and Biology in their bsc need to select code 6.

For more visit

https://medicine.careers360.com/articles/neet-qualification-codes

To help you further, here's how you can fill neet application form

To fill the application form you need to go through 5 steps i. e

*neet registration :- first of all visit the official website of neet i. e ntaneet  to generate your login credentials,

*then fill the form i. e you need to fill your personal academic and contact details

*and after that you need to go for uploading your documents,

*then pay the application fee

*And finally you should take the printout of confirmation page.

For detailed step by step procedure to fill neet application form, follow the below steps
https://medicine.careers360.com/articles/neet-application-form

Thank you