20 study abroad tests for Indian students

1. TOEFL (Test of English as a Foreign Language) - https://www.ets.org/toefl
2. IELTS (International English Language Testing System) - https://www.ielts.org
3. GRE (Graduate Record Examination) - https://www.ets.org/gre
4. GMAT (Graduate Management Admission Test) - https://www.mba.com/exam-prep/gmat-exam
5. SAT (Scholastic Assessment Test) - https://www.collegeboard.org/sat
6. ACT (American College Testing) - https://www.act.org
7. PTE (Pearson Test of English) - https://pearsonpte.com/
8. LSAT (Law School Admission Test) - https://www.lsac.org/lsat
9. MCAT (Medical College Admission Test) - https://www.aamc.org/students/applying-medical-school/taking-mcat-exam
10. TOEIC (Test of English for International Communication) - https://www.toeic.com/
11. GATE (Graduate Aptitude Test in Engineering) - http://gate.iitkgp.ac.in/
12. UGC-NET (University Grants Commission National Eligibility Test) - https://ugcnetonline.in/
13. CSIR-NET (Council of Scientific and Industrial Research National Eligibility Test) - http://www.csirhrdg.res.in/
14. GATE-CE (Graduate Aptitude Test in Engineering-Civil Engineering) - http://gate.iitkgp.ac.in/
15. GATE-ME (Graduate Aptitude Test in Engineering-Mechanical Engineering) - http://gate.iitkgp.ac.in/
16. GATE-EE (Graduate Aptitude Test in Engineering-Electrical Engineering) - http://gate.iitkgp.ac.in/
17. GATE-CS (Graduate Aptitude Test in Engineering-Computer Science) - http://gate.iitkgp.ac.in/
18. GATE-IN (Graduate Aptitude Test in Engineering-Instrumentation Engineering) - http://gate.iitkgp.ac.in/
19. CAT (Common Admission Test) - https://iimcat.ac.in/
20. CAE (Certificate in Advanced English) - https://www.cambridgeenglish.org/exams-and-tests/advanced/

Please note that some of the tests are specific for a certain field of studies, and not all of them are required for all universities or programs. It is important to check the admission requirements of the specific university and program you are applying to, and prepare accordingly.