IELTS, the International English Language Testing System, is designed to assess the language ability of candidates who need to study or work where English is used as the language of communication. IELTS is required for entry to university in the UK and other countries.
There is no specific vocabulary section in the IELTS test but you will need to understand and be able to use a large number of words to do well in all sections of the exam.
These words are indispensable for IELTS exam. You need to use them in your Speaking and Writing Test. In general, these words will greatly improve your IELTS Score. Prepare and practice just before your IELTS test, You will be able to impress your examiner with them.

Every test contains 20 questions and each question has 4 answer options. You have to select the correct answer. In the end of each test you can check your answers.
At the end of each test is evaluated your score, which you can later improve.