The process in which two nuclei of light elements (like that of hydrogen) combine to form a heavy nucleus (like that of helium), is called nuclear fusion. The conditions needed for carrying out nuclear fusion process are millions of degrees of temperature and millions of pascals of pressure.
1. The process in which two nuclei of light elements combine to form a heavy nucleus, is called
a. Nuclear fission
b. Nuclear fusion
c. Combination
d. None of these
2. The conditions needed for carrying out nuclear fusion process are
a. Millions of degrees of temperature
b. Millions of pascals of pressure
c. Both of these
d. None of these
3. Heating two deuterium atoms at extremely high temperature produce heavy nucleus of .......... and a .............. is emitted.
a. Helium,neutron
b. Protium,proton
c. Tritium,electron
d. None of these.
4. The energy produced in nuclear fusion reaction is much more than that produced in a nuclear fission reaction.
a. TRUE
b. FALSE
5. The nuclear reactions which occur at extremely high temperatures are called .......... reactions.
a. Thermal
b. Thermonuclear
c. Exothermic
d. Endothermic
