Indian students applying to a foreign university have to take exams to certify that they have the required basic minimum skills in English. The Test of English as a Foreign Language (TOEFL) and the International English Language Testing System (IELTS) are the two leading tests for this purpose.
This post gives you links to some of the most important information about these two tests of English proficiency published earlier on this blog. Take a look. You may find answers to questions you have been waiting to ask.