Home
Class 12
CHEMISTRY
8 g of the radioactive isotope, cesium-1...

8 g of the radioactive isotope, cesium-137 were collected on Feb. 1 and kept in a sealed tube. On July 1, it was found that only 0.25 g of it remained. So the half life period of the isotope is:

A

37.5 days

B

30 days

C

25 days

D

50 days.

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • MOCK TEST PAPER 5

    MODERN PUBLICATION|Exercise QUESTION|57 Videos

  • ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES

    MODERN PUBLICATION|Exercise Recent Examination Questions|8 Videos

Similar Questions

Explore conceptually related problems

A radioactive isotope having a half life of 2.3 days was received after 9.2 days. It was found that there were 300mg of the isotope in the container. The initial amount of the isotope was

Eight grams of a radioactive substance is reduced to 0.5 g after 1 hour. The half life period of the radioactive substance is :

Sixteen gram of a radioactive substance are reduced to 1 g in one hour. The half life period of the radioactive substance is :

A radioactive isotope decays at such a rate that after 192 minutes only 1/16 of the original amount remains. The half-life of the radioactive isotope is

A radioactive substance having a half life period of 5 days was received after 20 days. It was found that there was 3 g of the isotope in the container. The initial weight of the isotope when placed was:

A radioactive substance having a half life period of 3 days was received after 12 days. It was found that there was 3 g of the isotope in the container. The initial weight of the isotope when placed was :

After 24 hours, only 0.125 g out of the initial quantity of 1g of a radioisotope remains behind. what is half-life period?

Aradioactive isotope decays at such a rate that after 96 minutes only 1/8th of the original substance is left. The half life period of the nucleide is :

MODERN PUBLICATION-NUCLEAR CHEMISTRY-Multiple Choice Questions
  1. In a radioactive decay, an emitted electron comes from :

    Text Solution

    |

  2. An element Xloses one and twoßparticles in three successive stages. Th...

    Text Solution

    |

  3. 8 g of the radioactive isotope, cesium-137 were collected on Feb. 1 an...

    Text Solution

    |

  4. The change : ""(15)^(30)Pto""(14)^(30)Si requires the emission of

    Text Solution

    |

  5. The isotopes of elements were discovered by :

    Text Solution

    |

  6. Half life for radioactive ""^(14)C is years. In how many years, 200 mg...

    Text Solution

    |

  7. Which of the following is used in cancer chemotherapy?

    Text Solution

    |

  8. A radioactive substance having a half life period of 3 days was receiv...

    Text Solution

    |

  9. A radioactive element has a half life of one day. After three days, th...

    Text Solution

    |

  10. The missing particle in the reaction : ""(99)^(253)Es+""(2)^(4)Heto"...

    Text Solution

    |

  11. A radioactive substance has t(1//2) 60 minutes. After 3 hrs, what perc...

    Text Solution

    |

  12. Carbon-14 dating method is that the :

    Text Solution

    |

  13. The half-life of a radioactive nucleide 'X is 24 hours, the time requi...

    Text Solution

    |

  14. Carbon-14 has a half life period of 5760 years. 100 mg of sample conta...

    Text Solution

    |

  15. If amount of radioactive substance is increased three times, the numbe...

    Text Solution

    |

  16. A radioactive sample has half life of 1500 years. A sealed tube contai...

    Text Solution

    |

  17. ""(92)^(235)U+nto""(92)^(235)Uto fission product + Neutron 3.20xx10^(-...

    Text Solution

    |

  18. The radioactive decay of ""(35)^(88)X by a beta-emission produces an u...

    Text Solution

    |

  19. A radioactive element (atomic mass = 90 a.m.u.) has half life of 28 ye...

    Text Solution

    |

  20. The introduction of a neutron into the nuclear composition of an atom ...

    Text Solution

    |