clearly its an orange
It is a variety of Apple know as the Blenheim Orange. See related link for more details.
Blenheim Orange was created in 1740.
Apple
The orange is in the fruit group because it is a type of fruit.
Orange
cox s orange pippin is a apple!
gooseberry
Yes an Orange is a berry. Every Berry is a type of fruit, but a berry is defined by if it is created from one single ovary. *The orange fruit is a hesperidium, a type of berry.* - the tomato, also a berry.
Apple
a fruit. it has seeds.Clementines are a type of orange
a hybrid of a tangerine and a pomelo, or grapefruit
Assuming you meant "What type of acid is in AN orange (fruit)?", mostly citric acid, but also ascorbic acid (vitamin C).