My parents live with me in Maharashtra but my uncle is studied in Karnataka and have Karnataka domacile. And also my family go there just for visit our village situated in Belgaum district .my blood relatives live there. And there is a land belongs to my grandfather.

If your family has a house in Karnataka, you can opt for domicile there. But you need to obtain the domicile certificate from your district in Karnataka itself.
Talk with your Uncle and your parents.
Getting the domicile certificate is the only way.
Best of Luck.

As I studied in Maharashtra , is it possible to get domacile from Karnataka? And if I get domacile certificate then am eligible to apply 85% state quota . I possess the cast certificate of sc category of Karnataka government.

Then contact the councillor or the municipality of your locality in Maharashtra for helping you with the domicile.

Thanks sir
But to get domacile certificate of Karnataka state I need to contact to Karnataka state municipal department ?
And if I get domacile certificate then I should have to attend the Kannada language test ? Please tell me about this query .