Select the correct answer:
1. Chain reaction is a __________.
2. Consider the following statements:
(a) Atom bomb is based upon the principle of uncontrolled nuclear fusion.
(b) Hydrogen bomb is based upon the principle of uncontrolled nuclear fission.
(c) Nuclear reactor is based upon the principle of controlled nuclear fission.
Which of the statement(s) given above is /are correct?
(a) Atom bomb is based upon the principle of uncontrolled nuclear fusion.
(b) Hydrogen bomb is based upon the principle of uncontrolled nuclear fission.
(c) Nuclear reactor is based upon the principle of controlled nuclear fission.
Which of the statement(s) given above is /are correct?