Yes geography subject main class 11 main practical exam hota hain... But it really depends on institution for class 11.... 12 main definitely practical exam hoga...

Yes
Geography marks break up:
Theory 70
Practical 30
Under practical you have: practical file, project file and a written practical exam on the day of the practical, a viva

In 11th schools may skip project file but in 12 this is the standard.
But don't worry, there is book from ncert for practical exam only. Your geography teacher will provide you material for both practical file and project file which is like notes of that book.
You just have to copy them (both in 11th and 12th). The syllabus is different each year. I will suggest you buy that practical book.
Please be sincere when teachers explains you the content of the files as your viva will be grilling in 12th.

Hope this helps