I support the opinion of Ms Upasana Gulati - these names ARE INCORRECT. E.g. " 5-ethyl-5-(2-propenyl)- 3- Ethanone" ??? Where is 5 position in "ethanone".?
1- Furan 2- 2,4,6(1H,3H,5H)-Pyrimidinetrione, you probably mean 1-(furan-2-yl)-2,4,6(1H,3H,5H)-pyrimidinetrione, which is an aromatic compound considering that furan ring is known to be aromatic (quasi-aromatic according to older classification acc. Eugen Mueller)