Hello Aspirant ,

There is no difference between BTech ( Bachelors in Technology ) and BE ( Bachelor of Engineering  ) in India , some colleges / Universities use word BTech for example NITs , IITs etc while some use BE for example BITS etc and after completion your degree you will become an engineer .

Yes , You can Join BTech course after writing KCET (Karnataka Common Entrance Test ) as it is an entrance exam for admission in various courses which includes BTech .

Hope this helps.