2) Are there any armchairs in the shop?
Yes, there are.
3) Is there a table in the shop?
Yes, there is.
4) Is there a cupboard in the shop?
Yes, there is или No, there isn't (я не вижу на картинке, есть ли там шкаф)
5) Is there a desk in the shop?
No, there isn't
6) Are there any mirrors in the shop?
No, there aren't (Если нет) или Yes, there are (Если есть)
7) Are there any paintings in the shop?
No, there aren't