Yes, why not? Questions like those are allowed on this site. The tag is named as identification-request. The tag excerpt is:
Use this tag for questions regarding story identification, verse identification from scriptures and image identification of Hindu God, goddesses and characters from Hindu mythology.
This tag should be used carefully like any other tag. Apparently, this is misused on many questions and misunderstood by the users. This differs from mythology, scripture, puranas and other as these are very broad tags. If we add the aforementioned tags, this contradicts the purpose of tagging i.e., accurate tagging and effective tagging. We should not tag a question with popular tags just to get more attention.
For story identification: This tag should be used when we know stories but we we do not know the source of the story. If you are looking for the source of the story in Hindu texts, then this should be used. This is not the same as Mythology. We are using that tag when the question is about a story. When we use this tag, mythology need not to be used. Using other specific tags is recommended.
For verse location : This works well. Finding source is not the same as asking about scriptures itself. For example, I am asking about the source of the shloka "Janma na Jayate Sudrah". It means you are unsure where it comes from. It can be from Puranas, smritis, some commentary on those texts or it can be a random subhashita written by a philosopher or a poet. If this is tagged with scripture or any other tag like puranas, vedas is an assumption that it is present in those texts. But when comes to shlokas and stories, we are not sure about the source. So, adding scripture, Vedas or other tag gives a wrong guidance because the question is not about Vedas or a scripture. Scripture is about question which asks or discuss about scriptures only.
For image identification : Very appropriate. When you have a picture and don't know who it is, upload the picture, add what you have found and the source of the image (where you have found). Lack of details can cause it close as 'Unclear what you are asking'.
Tag identification-request is only limited to above scenarios. Not to be used for list questions,scriptural reference about a practice (like Sati, marriage etc.,), belief or some famous custom and traditions (shaving beard on different days or holding fasts and performing poojas on festivals). Use specific tags instead.
This is what our site has been doing till date.