Facebook has recently launched its new feature called “Facebook Questions”, this feature was previously available to small group of people for testing purpose but now its available to everyone. If this feature is not available to you then you can try it from here.
What is Facebook Questions?
“Facebook Questions lets you ask any question and get quick answers from your friends and other people on Facebook. Questions is designed so that anyone on Facebook can help you find the answer. So when you ask a question, it is shared in News Feed. If your friends answer or follow that question, it will be shared with their friends and so on”(Facebook Help Center).
After you activate this feature it will be available in your new feed, profile and on the left of your home page.
You can follow question in which you are interested, check the activities of your friends, add other answers in specific question if it is allowed by the person who created the question, ask or recommend the questions to your friends and also add comments.
You can get more information about questions from here.