Yes, a B.Tech degree from Karnataka State Open University (KSOU) is acceptable to foreign universities. As KSOU is recognized by UGC and the degree is valid for applying to foreign universities.

But, various countries have different rules and regulations, criteria, etc. for the recognition of universities. Most of the popular foreign universities have certain standards. Therefore, your statement of purpose, your academic record, your age, financial status, etc. will play an important role in the final admission.