Advertisements
Advertisements
प्रश्न
Define.
Nuclear fission
Advertisements
उत्तर
In nuclear fission, the atom of a heavy element is bombarded by a neutron to form an unstable isotope which further splits into two or more smaller nuclei releasing extra neutrons and large amount of energy and heat.
APPEARS IN
संबंधित प्रश्न
Which of the following is not a fossil fuel?
(a) coal
(b) petroleum gas
(c) biogas
(d) natural gas
The calorific values of five fuels A, B, C, D and E are given below:
| A | 48KJ/g |
| B | 17KJ/g |
| C | 150KJ/g |
| D | 50KJ/g |
| E | 30KJ/g |
What do you think is the purpose of the thick, concrete chamber surrounding the reactor of a nuclear power plant?
What is the nuclear fuel in the sun ?
How does inserting the control rods in the graphite core affect the fission in the reactor? Explain your answer.
What are the advantages and disadvantages of using nuclear fuel for generating electricity?
One atomic mass unit (u) is equivalent to an energy of:
A nuclear reactor has half the length of all its control rods inserted in graphite. What must be done so that the reactor produces more heat? Explain your answer.
Explain why, in a nuclear reactor, the chain reaction stops if the control rods are fully inserted into the graphite.
Which of the following statements are correct?
Electrons have
What do you mean by atomic number?
Name the following nuclear reaction:
\[\ce {^235_92U +^1_0n-> ^90_38Sr + ^143_54Xe + 3^1_0n + γ}\]
State, giving reason, whether the following nuclear decay are allowed or not?
\[\ce{_Z^AX ->_Z^{A-1}Y + _-1^0e}\]
The nucleus 84X202emits an alpha particle and forms the nucleus Y. Represent this change in the form of an equation.
What is the effect on the atomic mass and the atomic number of a radioactive element, after the emission of an α-particle?
A radioactive carbon nucleus 6C14 emits a β-particle to form a nitrogen nucleus. Represent the change by an equation showing the atomic and mass number of each elements.
State the energy conversion taking place in a solar cell.
An element 92U238 losses one alpha particle, and then one β-particle and then again one β- particle to get the final nucleus bQa.
(i) Write down the values of a and b.
(ii) State the relationship between the nuclei P and Q.
Write a short note.
Problems due to nuclear power plant
Copy and complete the nuclear reaction by filling in the blanks.
\[\ce{_92U^235 + _0n^1 -> _56Ba^{\underline{\phantom{....}}} + \underline{\phantom{..}}Kr^92 + 3 _0n^1}\]
