When you respond to a question does it sometimes get deleted?

Here’s the Guidelines

If you don’t follow the Guidelines your response will dropped.

Sometimes. But I can usually tell it will since I have been here so long. But sometimes it doesn’t.

Do you mean you sometimes notice a response of yours has been moderated, or do you mean when you post the response it never shows up to begin with?

We have moderators here and they will delete a response if it doesn’t meet the criteria as @Tropical_Willie has said. Read the guidelines. Usually, a reason will be given if your response is moderated such as: writing standards or off-topic or flame-bait.

Similarly, if you post a question and it is unclear or poorly written, it may be sent back to you for editing. That happens to all of us at times.

As far as I can tell, all responses show up at least at first before being removed. The mods aren’t privy to what’s posted right off so it takes some time for a response to be removed, if it is destined to.