Great , after diploma in mechanical it is a good to go for higher study .
There was lateral entry exam like AP ECET , UPSEE Lateral Entry , TS ECET , Haryana LEET , AICTE, Delhi Technological University for lateral entry into the B.Tech courses offered., CEE Kerala,UKSEE lateral entry exam

Colleges are
Uttar Pradesh for B.Tech lateral entry is given below-

Bundelkhand Institute of Engineering & Technology, Jhansi

Indian Institute of Carpet Technology, Bhadohi

Institute of Engineering and Technology, Lucknow

Kamla Nehru Institute of Technology, Sultanpur

Uttar Pradesh Textile Technology Institute, Kanpur

Rajkiya Engineering College, Ambdekar Nagar

Rajkiya Engineering College, Azamgarh

Dr. Ambedkar Institute of Technology for Handicapped, Kanpur

Rajkiya Engineering College, Banda

Rajkiya Engineering College, Bijnor

Rajkiya Engineering College, Kannauj

Rajkiya Engineering College, Mainpuri

Rajkiya Engineering College, Sonbhadra

Btech lateral entry colleges in Delhi

DTU Delhi

Bharati Vidyapeeth College of Engineering, Delhi, Paschim Vihar

NIEC, Shastri Park, Delhi

GGSIPU - Guru Gobind Singh Indraprastha University , Dwarka, Delhi

B.tech lateral entry admission 2021.

Engineering College, Idukki

College of Engineering, Munnar, Idukki

Govt. Engineering College, Kozhikkode

Govt. College of Engineering, Kannur

Govt. Rajiv Gandhi Institute of Tech., Kottayam

Govt. Engineering College, Sreekrishnapuram, Palakkad

T K M College of Engineering, Kollam

Govt. Engineering College, Barton Hills, TVM

Govt. Engineering College, Thalappuzha P O, Mananthavady, Wayanad

College of Engineering, Adoor

College of Engineering, Aranmula, Pathanamthitta

College of Engineering, Attingal, Thiruvananthapuram

Uttarakhand offering B.Tech lateral entry admission is given below-

Bipin Tripathi Kumaon Institute of Technology, Dwarahat

College of Basic Sciences and Humanities, Pantnagar

College of Technology, Pantnagar (Pant Nagar University)

G.B. Pant Engineering College, Ghurdauri, Pauri Garhwal

APJ Abdul Kalam Institute of Technology, Tanakpur

Institute of Technology, Gopeshwar

Nanhi Pari Seemant Institute of Technology, SIT Pithoragarh

THDC Institute of Hydro Power Engineering & Technology, Tehri Garhwa l

Women Institute of Technology, Dehradun

B.Tech lateral entry admission is given below-

Ch. Devi Lal State Institute of Engineering and Technology, Panniwala Motta, Sirsa

State Institute of Engineering & Technology Nilokheri (Karnal)

Ch. Ranbir Singh State Institute of Engineering and Technology, Silani Kesho Jhajjar

Rao Birender Singh State Institute of Engineering and Technology, Zainabad Rewari

Institute of Instrumentation Engg. K.U. Kurukshetra

University Institute of Engg. & Technology, Maharshi Dayanand University,Rohtak
Assam JLEE exam . It  Assam offering B.Tech lateral entry admission is given below-

Assam Engineering College, Guwahati

Jorhat Engineering College, Jorhat

Jorhat Institute of Science and Technology, Jorhat

Bineswar Brahma Engineering College, Kokrajhar

Girijananda Institute of Management and Technology, Guwahati

Girijananda Institute of Management and Technology, Tezpur
OJEE Lateral entry exam.  Odisha offering B.Tech lateral entry admission is given below-

Central Institute of Plastic Engineering and Technology, Patia, Bhubaneshwar

College of Engineering and Technology, Ghatikia, Bhubaneshwar

Government College of Engineering , Kalahandi, Bhawanipatna

Government College of Engineering, Keonjhar

Indira Gandhi Institute of Technology, Sarang

For more information you can visit here
https://engineering.careers360.com/articles/what-btech-lateral-entry-eligibility

Thank you. I hope this answer helps you.

JNEC Aurangabad

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