Take the curd and baking soda in a bowl, stir well and make it smooth. Keep aside while you make ready the other ingredients.
Sieve the flours and baking powder and keep aside.
Add sugar and oil in the curd mixture and let sugar melt. Add the vanilla essence. Add the dry ingredients into it and make a smooth batter. Add the orange zest and mix gently.
Grease a cake pan and preheat oven @180° for 10 mins.
Pour the batter into the greased pan and bake for 30-35 mins. A toothpick inserted should come out clean.
Remove the cake from oven and let it stand for about 5 mins. Demould and let it cool down.
Meanwhile prepare the glaze. In a bowl add the orane juice, confectioners sugar, orange zest and whisk well till smooth. If required add some more orange juice.
Pour or drizzle the orange glaze over the cake in your own style, cut and serve.
Enjoy!