Написать вопросы к предложению there is a nice picture on the table

 is there a nice picture on the table?

 are there a lot of postcards on the table?

1. Is there a nice picture on the table?
2. There is a nice picture on the table, isn't it?
3. Where is a nice picture?
4. What is there on the table?
5. There is a nice picture on the table or on the wall?
И на всякий случай 6. Which is a picture on the table?
Надеюсь, правильно. Удачи)