B.Tech : In India its a professional engineering undergraduate degree awarded after completion of 4 years of engineering study.

Diploma : A diploma is a specific academic award usually earned in professional/vocational courses, e.g., Engineering, Pharmacy, Design, etc. Its equivalent to general degree in that discipline for example, Diploma in engineering of Computer Science and engineering is rated differently than Bachelor of engineering in Computer Science and engineering but is equivalent to Bachelor of Science in Computer Science. It is taken soon after completing 10th.