"when the question arises" is correct and usable in written English.
You can use it when you want to refer to a hypothetical situation in which a question might be asked. For example: "When the question arises regarding which model of car is the most reliable, the answer is always the same: Toyota."
The play is about the curious transition in the lives of parents and their children when the question arises: Who's responsible now?" That question seemed very pressing to John Scott when he was working on "Lear".
When the question arises, it's much easier to throw up a smoke screen by contending, for example, that the council's 1990 authorization for the Persian Gulf war continues to provide all the authority needed.
Or, as long as we're dealing in the N.F.L.'s familiar language of clichés and obvious answers, when the question arises tonight, "Are you ready for some football?" who, really, will say yes?
So when the question arises as to whether a form of activity is protected by the Constitution, one should answer it, according to Dworkin, not by parsing words or deferring to majority rule or deferring to the executive, but by determining whether the protection of that activity is demanded by the spirit — the commitment to basic values like the value of equal concern — the Constitution breathes.
Only when the question arises of what distinguishes Comte from the latter does science enter into the picture.
For example, density data could be important when the question arises about additivity of composite material density.
But when the question arose again this year, Clooney's response was a little different: "Would I like to be president?
"When the question arose about saving the minority," Mr. Ivanishvili said, "police bravely acted in their defense, and were able to lead them away from the raving masses".
When the question arose in a solemn quodlibetal disputation, the secular master Jean de Pouilly, for example, declared the Scotist thesis not only improbable but even heretical.
When the question arose what to do with my life after high school, I listened to my gut feeling that told me to study photography.
It was a jolly afternoon at Dodger Stadium, particularly when the question arose as to whether the new owners had a spending limit.
