The phrase "questions centered on" is correct and usable in written English.
It is typically used to refer to the main focus or topic of a set of questions. Example: The interview consisted of a series of questions centered on the candidate's previous work experience.
The only questions centered on when the increases would take effect and how large the tax cuts would be.
Many of those questions centered on Carrie Tolstedt, who ran Wells's community banking operations, in which all of the problems occurred.
But the questions centered on U.S.C.'s offensive coordinator, Norm Chow, who has emerged as a leading candidate for a head coaching job, including the one at Stanford.
The questions centered on safety arrangements, project management related to nuclear explosives, "details of the manufacture of components for high explosives initiation systems" and experiments involving subatomic particles that can act as nuclear triggers.
Gibson's questions centered on the future financial rewards of Candelaria's gem, but this insidey banter between co-professionals was evidently not a line of sports talk that the network brass approved of, and Gibson's media career declined after that, although he has since done some baseball broadcasts with the HBO cable network.
After meeting with German officials, Mr. Wolfowitz, the deputy secretary of defense, said the questions centered on whether such a system could be built "in a way that is cooperative, rather than confrontational, in a way that enhances stability rather than generating new tensions and new arms races".
Other questions center on the methods, including social media, that officials use to reach the public.
Other questions center on how to value what the Treasury aims to purchase — an issue that goes to the heart of the crisis itself.
Both questions center on Detective Isnora: Did he have reason to believe that Mr. Bell, Mr. Guzman and a second passenger, Trent Benefield, were walking to Mr. Bell's car to arm themselves for a shooting?
While the Supreme Court's case law is a bit unclear on this point, it is not certain that Calpers is bound by the bankruptcy court's decision anyway, which leads to further imponderable questions centering on the question of whether a plan that Calpers didn't like would be binding on Calpers.
Other questions center on whether Mr. Woerth played a role in getting his wife, Florence, hired as a financial adviser to Mrs. Bettencourt, shortly after Mrs. Bettencourt's main wealth manager was granted the Légion d'Honneur by Mr. Sarkozy at the urging of Mr. Woerth.
