the choices are rapid neutron capture (r-process) during supernova explosion fus
ID: 2304420 • Letter: T
Question
the choices are rapid neutron capture (r-process) during supernova explosion
fusion of helium
fusion of hydrogen
planetary nebula
helium capture (with carbon)
radioactive decay and slow neutron capture
supernova
Match the various features with the appropriate choices Mechanism of dispersal of carbon-rich dust in the insterstellar medium Formation of Helium Choose] Formation of Carbon Choose] Formation of Oxygen IChoose ] Chain of reactions building from Silicon-28 up to Iron-56 Formation of Cobalt-59 until Bismuth-209 Choose] Elements beyond Bismuth-209 Choose] Mechanism for dispersal of heaviest elements into the interstellar medium Choose]Explanation / Answer
nebulla is defined as an interstellar cloud of hydrogen helium and other ionised gases. during the process of pre solar nebula, isotopes of carbon were found at different frequencies. they were then seperated or identified according to the properties. therefore first option is planetary nebula.
helium is said to be formed during the Big Bang process. it is the second lightest and most abundant element. as it is the bi product in the hydrogen fusion, the answer will be fusion of hydrogen.
formation of carbon involves a differnt process. it follows a triple alpha process. hence teh answer is helium capture.
oxygen was formed atleast 13 billion years ago. when the internal core collapses in teh sun, it produces significant energy to fuse helium. during this process, helium combines with carbon and produces oxygen. therefore the answer is fusion of helium
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