Haraam Food & Drinks

Q: What is the meaning of istihalah when something najis becomes pure? Like gelatin from pork?

Q: Is fat from pigs najas if it is already chemically converted to glycerin or stearic acid?

Q: Does Istihalah make najas things pure? Especially, when fat from pig is altered chemically and used in beauty creams?

Q: My question is that "Is hedgehogs halaal or not?" Please tell me with detail reference Jazaak Allah.

Q:

1. Is there a hadith which says a person who eats or drinks haram, his dua and salah is not accepted for 40 days?
2. After eating haram, if the person repents straight away will his dua and salah be accepted or it will still not be accepted until after 40 days?

Q: If a compound is taken from pig and then changed into new a different material through chemical reaction, is that halaal to eat?

Q: Is it permissible for one to consume cloned human cells?

Q: Why is the eating of goat's testicles haraam?

Q: What is the ruling on eating human flesh (own flesh or a dead persons flesh) if your life depended on it?

Q: I live in India. There are lots of religions around us. If they give us any food items with love which will is from their prayer place, should we consume it? Is there any problem in mingling with them.