Advertisements
Advertisements
प्रश्न
What is the source of energy of the sun and other stars?
उत्तर
The sun and other stars obtain their energy from the nuclear fusion reactions of hydrogen. So, hydrogen can be considered a source of energy.
APPEARS IN
संबंधित प्रश्न
The fuel having a calorific value of 55 kJ/g is likely to be:
(a) biogas
(b) methane gas
(c) hydrogen gas
(d) natural gas
Which of the following is used as a moderator in the reactor of a nuclear power station?
(a) liquid sodium
(b) boron
(c) graphite
(d) carbon dioxide
A nuclear reaction is represented by the following equation:
`""_92^235U+_0^1n-> _56^139Ba+_36^94Kr+xc+E`
What type of bomb is based on similar type of reaction?
A nuclear reaction is represented by the equation:
`""_1^2H+_1^2H->_2^3He+xc+E`
What does E represent?
The element X has an atomic mass number of 238 and an atomic number
of 92. It emits an alpha particle forming an element y. Y can be represented
by
State, giving reason, whether the following nuclear decay is allowed or not?
\[\ce{_Z^AX -> _Z^AQ + γ}\]
What will an alpha particle change into when it absorb one electron.
The nucleus of an atom does not contain electrons. Explain how is it possible for the nucleus to emit a beta particle which is fast moving electron.
Why are control rods used in nuclear reactors?
Give scientific reason.
It is absolutely necessary to control the fission reaction in nuclear power plants.
