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  • What is the atomic number of hydrogen?
    1
  • Which of the following statements about hydrogen is FALSE?
    It is a noble gas.
  • What is the state of hydrogen at room temperature and pressure?
    Gas
  • What is the chemical formula of molecular hydrogen?
    H₂
  • Which of the following is the most common isotope of hydrogen?
    Protium
  • Which of these gases is formed when hydrogen burns in oxygen?
    Water vapor
  • Which of the following processes is used to extract hydrogen from water?
    Electrolysis
  • Which of the following is NOT an industrial use of hydrogen?
    Cooling nuclear reactors
  • Which property makes hydrogen a potential clean fuel for the future?
    It produces only water when burned
  • Which form of hydrogen is radioactive?
    Tritium
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