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What term describes the nuclear process in which light atomic nuclei combine to form a heavier nucleus, releasing energy, and which powers the sun?

ANuclear fusion
BElectrolysis
CBeta decay
DNuclear fission

Explanation

Nuclear fusion is the process in which light atomic nuclei, such as hydrogen, combine under extreme temperature and pressure to form a heavier nucleus, releasing enormous amounts of energy in the process. This reaction powers the sun and other stars, where immense gravitational pressure allows hydrogen nuclei to fuse into helium. Scientists have long researched controlled nuclear fusion as a potential future source of clean energy on Earth, though practical large-scale fusion power remains a significant engineering challenge. Explore more Everyday Science MCQs on mcqstutor to keep practicing.

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