Why this exists
Most interview preparation is generic. You get a list of the top 100 questions for your role, you memorise them, and then the interviewer opens your resume and asks about the one line you were hoping they would skip.
Interviews in India, especially campus interviews, are overwhelmingly resume-driven. The panel has your one page in front of them and they work down it. Every phrase you wrote is a door they can open, “multi-tenant architecture”, “optical fibre”, “finite element analysis”, “ore beneficiation”. If you cannot defend a phrase, you should not have written it.
Inline Interview reads those phrases the way a panel would, asks you what you actually did, and hands back the fifty or sixty questions that are genuinely coming, with answers written in your own material, in plain spoken English.
It works for every branch, because it does not assume a syllabus. It reads your page. A mechanical student gets asked about their FEA boundary conditions, not about hash maps.