You would use alum, another sort of white powder.
You cannot use baking powder as a substitute for baking soda
if the recipie says to use baking powder you should use that as that is how it is sopose to be used but you may try and use baking soda if you don't have baking powder
You could use yeast instead of baking powder.
No, you can substitute buttermilk for milk but not for baking powder.
No. Use a mens syptic pencil they use for shaving cuts, if this does not work when applied to nail, take the pencil and shave some off to make a powder and dip nail in it. Old fashioned remedy, dip nail in flour, it bleeding does not stop go to the vet.
Baking powder allows the dough to rise, and is often used with salt.
Baking soda is required to leaven the baked product. Either baking soda or baking powder would need to be included in the batter regardless of the use of cocoa powder.
no
you could use baking powder but its best to use dry active yeast
i usually use baking powder, not baking soda
CCan I use baking powder in banana bread