The IELTS diagnostic test contains 36 questions covering listening, reading, vocabulary and grammar. Each question has only one possible correct answer.
There are three versions of the IELTS diagnostic test. You can take all three of them over the course of your IELTS preparation to check your progress.
When you have completed the test, your score will be expressed as a CEFR (Common European Framework Reference for Languages) level.
For more information about CEFR levels click here
For information about how IELTS band scores map to CEFR levels click here