In the carbon cycle, from which stars hotter than the sun obtain their energy, the 6C12 isotope
A
splits into three alpha particles
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B
fuse with another 6C12 nucleus to form 12Mg24
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C
is completely converted into energy
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D
is regenerated at the end of the cycle
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Solution
The correct option is D is regenerated at the end of the cycle Carbon cycle : 126C+11H→137N+Q1 137N→136C+(01e)+Q2 136C+11H→147N+Q3 147N+11H→158O+Q4 158O→157N+(01e)+Q5 157N+11H→126C+42He+Q5 So, in the final reaction Carbon is regenerated.