Hello Tushar
See JEE Advanced is such an exam where just clearing it doesn't guarantee you an admission in any government college. But however if you get a good rank in JEE Advanced, you don't need to appear for any interview for the admissions. It's done only on the basis of your score and rank in JEE Advanced. Hope this helps ! 
All the best !

After clearing JEE Advanced Exam, you will get admission in IITs to pursue UG Engineering courses.

JEE Advanced is one of the toughest exams conducted in India.

JEE Advanced exam is conducted online as well as offline. It consists of two test papers: Paper-1 and Paper-2. Both the papers consist of three sections: Physics, Chemistry and Mathematics.

Not only engineering, you can also get admission in UG Architectural courses. For this, you have to appear in JEE Advnaced AAT Exam.

JEE Advanced Architecture Aptitude Test consists of three sections: Mathematics, Aptitude Test & Drawing Test. Total 82 objective type questions will be asked which carries 390 marks.

Hello buddy, after clearing jee advance you don't get any government College until you score good rank in jee advance. You have to score good rank to get admission in top government engineering College's of India I.e IITs. You should also be in top engineering 20 % percentile I'm your board exam also to get admission in IITS/NITs. Best of luck for your future.

Dear Tushar,

After clearing JEE Advanced exam you can take admission in IITs.

To know in detail you can refer below link

https://engineering.careers360.com/articles/jee-advanced?icn=jee-advanced_article&ici=jee-advanced_exam_rdmrvp

Good Luck!!