Dear Gourav,

There are many entrance exams for B.tech.

You are asking for which application form?

To know all the important dates you can refer below link

https://engineering.careers360.com/exams

Good Luck!!

Hi Gourav. Thanks for contacting Careers360. 

But, as the question currently stands now, it lacks details. That is, 

• We don't know where you are from. 
• We don't know which college you are aiming to study in. 
• As a result of this, we are unable to guide you further on the matter. 

Please, Gourav, can you comment below my answer specifying which college you are talking about?