switch on the oven for preheating @180°C.
grease a baking tin with oil and keep aside.
take a bowl and add all the ingredients mentioned above.
mix them and make a smooth batter with no lumps.
pour into a greased cake tin.
place the tin in the middle rack of the oven (with both the rods on).
bake for about 40 to 45 minutes till golden brown from top. baking time many vary in your case because every oven is different.
to check the done-ness of cake, insert toothpick in the cake. if the toothpick comes out clean, your cake is properly baked, otherwise bake for some more time.
remove cake from oven. let it cool down, invert and slice.