1) The fuel used in nuclear reactor for generating electricity is? a) Uranium dioxide b) Fossil fuel c) Carbon d) Barium e) Petrol 2) Fuels formed from the remains of ancient plants and animals a) Nuclear Fuel b) Renewable c) Biomass d) Fossil fuel 3) The percentage od U-235 isotope in an enriched uranium pellet is a) 0.72 percent b) 3 to 5 percent c) 6 percent d) 8 percent e) 2 percent 4) Special care should be taken in disposing of radioactive waste such as  a) Carbon dioxide b) pollutants c) Plastic d) Nuclear waste 5) High-level nuclear waste should be a) Buried in community landfills b) Left open near the residential unit c) Kept outside in a plastic container d) Buried in a deep pool of water 6) What do hydrocarbon react with when fossil fuels are burned a) carbon b) oxygen c) water d) carbon dioxide

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