1. This is the hardest question to answer of all of them. It depends on who you read. The New York Times has a different policy than the Huffington Post. I'll say it is intended to be true.
2. True. That's why they are called specialty shops.
3. Sometimes. There are other possibilities. I think you are intended to say true.
4. True. They do.
5. False. It's the other way around.