Nuclear fission reactions are not a source of energy for one of the following. This is :
(a) atom bomb (b) power plants (c) sun (d) pacemaker

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Solution

A pacemaker is used for maintaining rhythm the heart. We can't use nuclear energy inside our body. So, the correct choice is (d).

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Nuclear fission reactions are not a source of energy for one of the following. This is : (a) atom bomb (b) power plants (c) sun (d) pacemaker

A pacemaker is used for maintaining rhythm the heart. We can't use nuclear energy inside our body. So, the correct choice is (d).

Nuclear fission reactions are not a source of energy for one of the following. This is :
(a) atom bomb (b) power plants (c) sun (d) pacemaker