Which of the following is correct regarding nuclear fission?
(i) The process in which a heavy nucleus is broken into two nearly equal fragments, is called ‘Nuclear Fission’
(ii) Nautral uranium has two istopes,`._(92)U^(238)`and `._(92)U^(235)` in the ratio `1 : 0.07`. the fission of `U^(235)` takes place only by fats neutrons, whereast that of `U^(235)` is possible by slow neutrons
(iii) One of the reaction for fission of `U^(235)`
`._(92)^(236)U+._(0)^(1)nrarr._(92)^(236)Urarr._(52)^(144)Ba+._(36)^(89)Kr+3_(0)^(1)n +` energy
(iv) In the fission of one `U^(235)` nucleus, about `200MeV` of enegry of obtained. Most of this enegry is obtained from of `K.E.` of fragments obtained by fission, the rest of obained as `K.E.` of emitted neutrons, `gamma`-rays, heat and light radiation

Options

A. `(i),(ii),(iii)`
B. `(ii),(iii),(iv)`
C. `(i),(ii),(iv)`
D. all

Answer

D