what is the diff. between B.E and B.TECH?

There is no difference as such between the two. They are just two different names for the same course. usually the IIT's and the NIT's use the designation 'B.Tech.' and the other private colleges use 'B.E.' .. but there is no rule nor any difference.

both are almost same

there is not so much differnce in btech you have 6 month trainig in last month but not in BE