I have asked many type of questions related to both technical and HR round. For technical round, first they asked which language/subject is your favourite ? If you tell the subject they will ask most of the questions related to that subject only, so chose the subject wisely. If you are giving interview for an IT company, they can ask you to write a query or simple program. For HR round, they can ask questions like what are your strength, weakness, what are your hobbies etc. If you tell that you hobby is singing or dancing then they can ask you questions regarding awards related to singing/dancing or anything related to that so choose your hobby wisely.