Hello aspirant,
It's good that you are preparing for Airforce Y group. It's always advisable to give mock test before sitting in actual examination. The official website where you can find syllabus and model paper is-
https://airmenselection.cdac.in/CASB/modalqp.html
You can also appear in mock tests available on different sites like Testbook and GradeUp.
Hope it helps you..
Best of luck..
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