No, it is not.
I is not good for celiacs as it contains wheat/gluten.
A person with celiacs isn't typically allergic to spelt.
Yes. Celiacs is the American spelling of the same word. I live in Australia and we spell it Coeliac.
use "I can't believe its not cornflour"
Cornmeal comes from grinding corn and cornflour comes from grinding corn kernels
cornflour and water
Yes
no
A little cornflour will do the trick.
diabetic people can use cornflour and custurd powder?
Not in all recipes; for most baking recipes substituting plain flour for cornflour will not work, since cornflour has no gluten (which is what makes dough springy) and it requires far more hydration. Adding some cornflour to the flour in baking will result in lighter baked goods, but only until the total flour is 5% cornflour; after that the baked good gets progressively more dense and inedible. Cornflour is useful for thickening custards, which plain flour is not so good at. But you cannot bake normally with cornflour. Both cornflour and wheat flour have a similar calorie content, wheatflour is lower in the glycemic load (GL) index compared to cornflour, and whereas cornflour is considered "highly inflammitory" (i.e likely to cause a reaction), wheatflour is only considered "inflammitory."