JEE mains application form has released on November. You can check NTA official website for more details. For other exams you have mentioned that is BITSAT, for that application form will probably release on last week of December. VIT University has released the application form for VITEE 2021 online on November 30, 2021. The last date to register for VITEEE 2021 application form is March 30, 2021. So follow the official website mentioned here as soon as possible for application https://viteee.vit.ac.in

SRMJEE application form has not been released yet. Though it would be published very soon, keep updating yourself for further notification.

Hope it would be helpful.

Greetings!

JEE main: Candidates will be able to fill the application form from the month of December 2020 for January session. The last date to fill the application form for JEE Main 2021 January session will be December 2020. The application process for April session will start from first week of February till second week of March 2021.

BITSAT:  The authorities are expected to release the BITSAT 2021 application form in the second week of January in online mode. The last date to register and fill the application form is tentatively the last week of March

VITEEE:  VITEEE 2021 is likely to be released online on November 30, 2020. Interested candidates should check eligibility criteria first and fill the application form before March 30, 2021.

SRMJEE:SRM University will release the SRMJEEE 2021 application form tentatively in the third week of October 2020. Candidates can fill the application form online as well as online

I hope this was helpful. Thank you!