Questions in nuclei

Select	Question
	Atom bomb consists of two pieces of $_{92}{U^{235}}$ and a source of
	Most suitable element for nuclear fission is the element with atomic number near
	From the following equations, pick out the possible nuclear reactions
	During the nuclear fusion reaction
	In a working nuclear reactor, Cadmium rods, (control rods) are used to
	Fusion reaction takes place at high temperature because
	In nuclear reactions, we have the conservation of
	The mechanism of the hydrogen bomb is based on
	The main source of solar energy is
	A gamma ray photon creates an electron- positron pair. If the rest mass energy of an electron is 0.5 MeV and the total K.E. of the electron- positron pair is 0.78 MeV, then the energy of the gamma ray photon must be