Can a mechanical graduate apply for M.Tech in CSE or IT from private universities? What subject papers should I choose for entrance?

Hello Vamshi, You can do a M.Tech in CSE after doing B.Tech in Mechanical, provided your GATE Paper must be Computer Science and IT, but it is highly advisable you gain a mastery in the domain you have graduated from. If you really are very interested in CSE and have understood and done some coding