"What time does this museum close?" or "What time this museum closes?"
Although you could obviously use both in vernacular, I think the first one is gramatically more correct.
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Although you could obviously use both in vernacular, I think the first one is gramatically more correct.
The first.
See "Forming WH-questions" at the Cambridge Dictionary.
WH-questions usually use auxiliary verbs (forms of be/do/have) or modal verbs, and there is.usually a specific order
Wh- word +aux/modal +subject + verb.
When does the museum one?
When will the museum close?
When is the museum closing?