Is there any easy way to see a list of closed questions? Preferably with the ability to choose which close reason.
Perhaps this is possible by using the Data Explorer?
Unfortunately, this isn't possible with the search engine. If you have 10k & above, however, you can filter it from the /tools tab. but you're limited to a specific set.
The data from Data explorer is typically a month or two out of date and even with the dated data, there's no way to group them into reasons why they were closed - a look at the schema indicates there's only record of it being closed, not why it was closed, so that's not an option