Hello sir, what is the difference between NBA-Accreated,NACC-Accreated and normal colleges?

NBA accredits individual courses like B.Tech in CSE, B.Tech in ECE, MCA and so on depending on the strengths of the department offering those courses in the college. Whereas NAAC accreditation is for the entire institute or college.

These are grading systems well recognized by govt. all over the india... The accredited colleges status also helps when one gets an admission into some foreign university..