Multiple choice Which one of the following Nuclear Reactors uses Natural Uranium as fuel? Fast Breeder Reactor (FBR) Pressurised Heavy Water Reactor (Phwr) Boiling Water Reactor Fast Breeder test Reactor (FBTR) Reveal answer Fill a bubble to check yourself B Correct answer Explanation Pressurised Heavy Water Reactors (PHWR) are designed to use natural uranium as fuel, utilizing heavy water as both coolant and moderator.