Home
Class 12
PHYSICS
Atomic weight of boron is 10.81 and it h...

Atomic weight of boron is `10.81` and it has two isotopes `""_5 B^10` and `""_5 B^11`. Then ratio of `""_5 B^10` in nature would be.

A

`19 : 81`

B

`10 : 11`

C

`15 : 16`

D

`81 : 19`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • NEET 2024

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise QUESTION|50 Videos
  • OPTICS AND OPTICAL INSTRUMENTS

    NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)|Exercise All Questions|87 Videos
NEET PREVIOUS YEAR (YEARWISE + CHAPTERWISE)-NUCLEAR PHYSICS-Exercise
  1. Complete the equation for the following fission process ""92 U^235 ""0...

    Text Solution

    |

  2. A nucleus ""n X^m emits one alpha and one beta particles. The resultin...

    Text Solution

    |

  3. Atomic weight of boron is 10.81 and it has two isotopes ""5 B^10 and "...

    Text Solution

    |

  4. Half-life of a radioactive substance A and B are, respectively, 20 min...

    Text Solution

    |

  5. In a fission reaction ""92^236 U rarr ^117 X + ^117Y + n + n, the bind...

    Text Solution

    |

  6. A free neutron decays into a proton, an electron and

    Text Solution

    |

  7. The satble nucleus that has a radius half that of Fe^(56) is

    Text Solution

    |

  8. Which of the following is used as a moderator in nuclear reactors?

    Text Solution

    |

  9. The activity of a radioactive sample is measured as 9750 counts per mi...

    Text Solution

    |

  10. The most penetrating radiation out of the following is

    Text Solution

    |

  11. A nucleus ruptures into two nuclear parts, which have their velocity r...

    Text Solution

    |

  12. The count rate of a Geiger Muller counter for the radiation of a radio...

    Text Solution

    |

  13. What is the respective number of alpha and beta particles emitted in t...

    Text Solution

    |

  14. The mass number of He is 4 and that for suphur is 32. The radius of su...

    Text Solution

    |

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

    Text Solution

    |

  16. If the binding energy per nucleon in ""(3)Li^(7) and ""(2)He^(4) nucle...

    Text Solution

    |

  17. Energy released in the fission of a single ""92 U^235 nucleus is 200 M...

    Text Solution

    |

  18. The binding energy per nucleon is maximum in the case of.

    Text Solution

    |

  19. In the given reaction ""z X^A rarr ""(z+1)Y^A rarr ""(z-1) K^(A - 4)...

    Text Solution

    |

  20. The mass density of a nucleus varies with mass number A as

    Text Solution

    |