VXL Instruments interview questions

Initially I got a call from a consultancy who schedule my interview at Verixo technologies which is a part of Priya group of companies as a Senior Software Engineer in Qt C/C++. First round was a face to face technical round which lasts for around 30-45 mins. All questions are related to OOP concepts and some logical. It is not much tough. Second round was a programming test, I was given a laptop and told to perform a task. I was told to develop a form based GUI application using Qt and restore its previous state when the program starts again. Duration is 30 mins and I performed it. Next round was a type of HR which the technical team only handled and ask my expectation and try to negotiate. I declined there offer as they were offering me very less salary than what I demanded.