The phrase "a significant question raised" is correct and usable in written English.
It can be used when discussing an important issue or inquiry that has been brought to attention in a conversation, text, or analysis.
Example: "In the debate about climate change, a significant question raised is whether current policies are sufficient to mitigate its effects."
Alternatives: "an important question posed" or "a crucial issue brought up".
The other, more significant question raised by the reports is this: Why has Deutsche Bank's management in London been given a pass by the Financial Conduct Authority?
One of the most significant questions raised by the disclosures, people close to the situation said yesterday, was why Deloitte & Touche, the accountant for both the company and the family-controlled entities, did not inform Adelphia's audit committee that the family was using the company's credit lines to buy Adelphia stock.
Sure, there's been some debate and significant questions raised by the Obama administration's decision to administer the reading of Miranda rights to the younger, surviving Tsarnaev brother; some congresspeople are calling for him to be declared an "enemy combatant," which would suspend his constitutional rights and due process.
If, during the file review, a significant question is raised as to whether the detainee's continued detention is warranted under the standard in section 2 of this order, the PRB will promptly convene a full review pursuant to the standards in section 3(a) of this order.
The paper answers a significant open question raised by Papadimitriou and Tsitsiklis [Math. Oper. Res. 12 (3) (1987) 441 450] about the complexity of infinite horizon POMDPs.
But the drawer's presence raised a significant question: Should I toss the mattress on top of the drawer, or remove the drawer?
This was a hot topic throughout the conference; in a panel session on the economics of ad blocking, Dominic Good, Global Sales Director of the FT, raised a significant question as to whether the marketing and advertising industry has its' "house in order".
The following clues may indicate an unfair Pip: If you have had good appraisals prior to the introduction of the Pip, this would raise a significant question as to why the Pip is appropriate.
This raises a significant question: If Twitter is willing to alter the chronology of the main timeline for the purpose of conversations, what else would it change it for?
He vowed to impose "substantial sanctions" on the Spurs, then followed through by fining the team $250,000 for the couch day, raising a significant question for bosses everywhere: when is it unreasonable to give someone the day off?
