Reddit to ask a question and receive responses:

• Make a list of really niche subreddits to which you can contribute because you're an expert or enthusiast. Then go to the 'new' tab and check if there are any questions there that you can respond to.
• For post and comment karma, go to r/AskReddit and ask/answer questions.
• Make an attempt to include Reddit submissions in your normal surfing routine. When you come across something worth sharing, post it to one of the many active subreddits on this list, or anywhere you think it would be most useful.

Read More: How do I ask a question on the Reddit mobile app?