Nuclear fusion in the sun is increasing in supply of:
Correct answer: B. Helium
- A. Hydrogen
- B. Helium
- C. Nucleons
- D. Positrons
Explanation
Nuclear fusion in the sun involves the transformation of hydrogen into helium. This process increases the supply of helium as hydrogen nuclei (protons) are fused to form helium nuclei. Although nucleons are involved in this process, they are not increased in number, just rearranged. Positrons are indeed produced in small amounts during fusion, but they do not represent an increasing supply as helium does.
This question appeared on the ETEA MDCAT 2015 paper, which you can sit online with every answer explained.
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About Composition of Atomic Nuclei
Atomic nuclei contain positively charged protons and electrically neutral neutrons, collectively called nucleons. Questions use atomic number, mass number and nuclear notation to identify isotopes, isobars and isotones, and may connect nuclear composition with nuclear charge, mass defect, binding energy and the stability of the nucleus.
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