"Right questions" refers to asking inquiries that lead to useful or meaningful information or insights. It implies asking thoughtful, relevant, and effective questions to obtain the desired knowledge or understanding of a topic. Full definition
When job candidates ask right questions they not only can get insightful information about the company, but also can demonstrate interest and skills that would distinguish them from the pack. (prime-resume.com)
We had worked together on civil rights questions in the 1960s. (firstthings.com)