Laws pertaining to Slaughtering

Q: How long should a chicken be kept closed before slaughter? I have heard that if the chicken eats filth, it should be tied for some while before slaughtering it. Is this correct?

Q: Can one perform zabiha of an animal that is purchased with illegal means, i.e. money earned from gambling, smuggling drugs, etc.

Q:

1. What is the correct way to slaughter an animal, especially a hen, in the right way?

2. What are the conditions for a slaughter or meat to be considered halal?

Q: In many places, the chicken is slaughtered and then tipped in to the hot water and then the feathers are removed. In all the chicken shops this is the method. Is it permissible to eat this before taking impure parts? Secondly, feather removed by hand instead of using hot water and then roasted to removed small leftover feathers before taking out impure parts, is it permissible?

Q: I want to ask that if during chicken slaughter, the head is mistakenly detached from the body, is the chicken halaal if it was slaughtered according to shariah? Secondly after how much time can it be cooked and prepared?

Q: Almost all Halaal Certifying Bodies appear to condone the stunning of animals and even chickens prior to slaughtering. But what is the Shariah aspect in this respect? Is it simply deemed an undesirable practice but not explicitly permitted or condoned?

Q: How should one do zabah of a pigeon, chicken, poultry? How many veins should be cut?

Q: What is the ruling regarding stunniang the animal? The process is adopted in the UK and in other countries. If the animal is stunned, will it be permissible to eat the meat of the stunned animal?

Q: If the chicken wing is broken whilst slaughtering , is it still permissible to consume?

Q: Is an animal which is stunned haraam to eat?