Which is correct None of them is or none of them are?

Related questions

1. What words can you not start a sentence with?
2. Do it either way?
3. Is it OK to start a sentence with and?
4. What is the difference between me either and Me neither?
5. What is the difference between either or neither?
6. What does the name Noor mean?
7. Can you use neither for three things?
8. Does and/or mean either?
9. Can I start a sentence with before?
10. What's the meaning of Me neither?

Tags

1. #plural
2. #obviously
3. #common
4. #either
5. #singular
6. #short
7. #always
8. #grammar
9. #because
10. #online
11. #misconception
12. #correct