Preheat your oven to 180C
Grease a 9 inch cake pan
In a bowl, whisk flour, baking soda, baking powder, and orange zest
In another bowl using a mixer, beat the oil and sugar until fluffy. Gradually add in the eggs one at a time while continuously beating.
Alternate adding the orange juice and the flour mixture into the egg batter. Do not over mix
Bake for 35-40 min or until a toothpick comes out clean