How can I get admission in a college to pursue B.Tech through lateral entry?

You can get lateral entry in B.Tech very easily after doing diploma in any of the engineering branches which is normally of 3 years means 6 semesters you have to pass all the semesters without any backlogs and then you can easily apply in any university for B.Tech and they will surely give you later

You have to pursue Diploma and should clear the same within 3 years and you have to appear for an exam conducted at the end of 3rd year and it is conducted branch wise. You have to crack the exam to get a seat.