No.
For a type fish or seafood to be Kosher, it must have fins and scales.
That would depend on how they were made (the prawn flavor would have to be exclusively artificial), but even if they could be considered Kosher it is probably unlikely that a practicing Jew would be interested in eating them anyway.
It's shellfish.
Jews who keep kosher do not eat prawn, since it's not a kosher species of sea creature.
No, unless it is artificial flavoring. Prawns and other shelfish are not kosher. The only kosher seafood are fish that have both fins and scales.
Yes, eating prawn is allowed in Islam. All kinds of sea food is allowed to eat per Islam teachings.
Prawn cocktail crisps typically do not contain actual prawns or shellfish. The flavoring in prawn cocktail crisps is usually a combination of various seasonings meant to mimic the taste of a prawn cocktail sauce, such as tomato, onion, garlic, and paprika. The crisps themselves are usually made from potatoes or other starches, and do not contain any actual seafood ingredients.
Orthodox Jews are only allowed to eat kosher foods.
Yes.
Yes.
Religiously observant Jews will only eat in restaurants that are kosher certified.
Pork is not allowed to eaten by Jews, Muslims. Hindus are allowed to eat pork but many choose not to very often. Sikhs are also allowed to eat pork but chose not to very often
Muslims aren't allowed to eat pork. Jews aren't supposed to eat meat from any animal that does not chew its cud and have split hooves.