The correct answer is Uranium.

• Nuclear Power Plant
  • It is a type of power plant that uses the process of nuclear fission in order to generate electricity.
  • They do this by using nuclear reactors in combination with the Rankine cycle, where the heat generated by the reactor converts water into steam, which spins a turbine and a generator.
• Uranium
  • It is a silvery-white element.
  • Its atomic number is 92 and its mass number is 238.
  • This element was discovered by German Chemist MH Klaproth.
  • It is also called the metal of hope.
  • It does not occur in the free state and is extracted from pitch blended ore.
  • It is used in the atomic reactor as nuclear fuel.

• Gasoline
  • It is a derivative product of crude oil or petroleum.
  • It is derived during the fractional distillation process and has a translucent liquid form.
  • It is not used in its crude form. Different additives are added like ethanol to use as fuel for passenger vehicles.
• Gold
  • It is a soft, bright yellow-colored lustrous metal.
  • Its atomic number is 79 and its mass number is 197.
  • It occurs in nature in free element form or in alluvial deposits or in the form of ores.
  • It is used in making ornaments, coins, electroplating, and in the sugar and pharmaceutical industries.
• Radium
  • Radium is a silvery-white metal that does not occur free in nature.
  • It is a chemical element with the symbol Ra and atomic number 83.
  • It was first discovered in 1898 by Pierre Curie and Marie Curie.
  • Radium's main practical use has been in the medicine producing radon gas from radium chloride to be used in radiotherapy for cancer.