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Unstable fission fragments decay by emit...

Unstable fission fragments decay by emitting neutrons and electrons, neutrons so emitted are called

A

prompt neutrons

B

delayed neutrons

C

stray neutrons

D

sustained neutrons

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The correct Answer is:
B
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AAKASH SERIES-NUCLEI-Exercise-I
  1. The working principle in atom bomb is

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  2. In a critical chain reaction

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  3. Unstable fission fragments decay by emitting neutrons and electrons, n...

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  4. Chain reaction can be initiated by

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  5. At a specific instant, the emission of radio active compound is deflec...

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  6. Cadmium and Boron rods are used in a nuclear reactor to

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  7. Heavy water is used as moderator in a nuclear reactor. The function of...

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  8. In fission of U-235, the percentage of mass converted into energy is a...

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  9. The reactor in which the number of fissionable nuclides produced are m...

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  10. A nucleus with z= 92 units emits the following in a sequence. alpha,...

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  11. To sustain the chain reaction, the mass of the material should be

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  12. Nuclear fission can be explained by

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  13. The operation of a nuciear reactor is said to be critical, if the mult...

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  14. The main source of sun.s energy is

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  15. Fusion reaction take place at high temperature because

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  16. Nuclear fusion is possible

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  17. In sun, the important source of energy is,

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  18. In carbon-nitrogen nuclear fusion cycle, protons are fused to form a h...

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  19. When two deuterium nuclei fuse together to form a tritium nuclei, we g...

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  20. Particles and their anti-particles have,

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