Home
Class 12
CHEMISTRY
If 12g of a sample is taken, then 6g of ...

If `12g` of a sample is taken, then `6g` of a sample decays in `1 hr`. Find the amount of sample showing decay in next hour.

A

3g

B

1g

C

2g

D

6g

Text Solution

Verified by Experts

The correct Answer is:
A

Half-life is 1 hr and thus in each half-life, half of the sample decays.
Promotional Banner

Topper's Solved these Questions

  • NUCLEAR CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking (Artificial transmutation )|59 Videos
  • NUCLEAR CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking (Isotopes-Isotones and Nuclear isomers)|34 Videos
  • NUCLEAR CHEMISTRY

    ERRORLESS |Exercise Ordinary Thinking (Causes of radioactivity and Group displacement law)|66 Videos
  • NITROGEN CONTAINING COMPOUNDS

    ERRORLESS |Exercise JEE (ADVANCED) 2018 MORE THAN ONE CHOICE CORRECT ANSWER|1 Videos
  • ORES, MINERALS AND METALLURGICAL EXTRACTION

    ERRORLESS |Exercise JEE ANSWER TPYE QUESTION (JEE Advanced) 2018) Numeric answer type question|1 Videos

Similar Questions

Explore conceptually related problems

20% radioactive sample decay in time t. How much sample decay in time 2t ?

If 20% of a radioactive sample decays in 10 days, then the amount of substance left after 20 days will be approximately

4xx10^23 tritium atoms are contained in a vessel. The half-life of decay of trituim nuclei is 12.3 y. Find (a) the activity of the sample ,(b) the number of decays in the next 10 hours (c ) the number of decays in the next 6.15 y.

It is observed that only 6.25% of a given radioactive sample is left undecayed after a period of 16 days. What is the decay constant of this sample in day^-1 ?

For a radioactive sample, 15/16 th part decays in 20 minutes. The half-life of the sample is

90% of a radioactive sample is left undecayed after time t has elapesed. What percentage of the initial sample will decay in a total time 2 t ?

ERRORLESS -NUCLEAR CHEMISTRY -Ordinary Thinking (Rate of decay and Half - life)
  1. A sample of rock from moon contains equal number of atoms of uranium a...

    Text Solution

    |

  2. The half lives of two radioactive nuclides A and B are 1 and 2 min. re...

    Text Solution

    |

  3. If 12g of a sample is taken, then 6g of a sample decays in 1 hr. Find...

    Text Solution

    |

  4. When a radioactive substances is subjected to a vacuum, the rate of di...

    Text Solution

    |

  5. Radioactive decay is a

    Text Solution

    |

  6. If 2.0g of a radioactive isotope has a half-life of 20 hr, the half-li...

    Text Solution

    |

  7. Radioactive lead .(82)Pb^(201) has a half-life of 8 hours. Starting fr...

    Text Solution

    |

  8. If the amount of radioactive substance is increased three times, the n...

    Text Solution

    |

  9. Half life of radioactive element is 100 yrs. The time in which it disi...

    Text Solution

    |

  10. The initial mass of a radioactive element is 40g. How many grams of it...

    Text Solution

    |

  11. The half-life period of a radioactive substance is 8 years. After 16 y...

    Text Solution

    |

  12. The half-life of .(38)^(90)Sr is 20 years. If its sample having initia...

    Text Solution

    |

  13. A wood piece is 11460 years old. What is the fraction of .^(14)C activ...

    Text Solution

    |

  14. 87.5% decomposition of a radioactive substance completes in 3 hours. W...

    Text Solution

    |

  15. The age of a specimen, t, is related to the daughter/parent ratio D/P ...

    Text Solution

    |

  16. If N(0) and N are the number of radioactive particles at time t = 0 an...

    Text Solution

    |

  17. The value of disintegration constant of radioactive isotope

    Text Solution

    |

  18. The radioactivity due to C-14 isotope (half-life = 6000 years) of a sa...

    Text Solution

    |

  19. The half-life of a radioactive element is 6 months. The time taken to ...

    Text Solution

    |

  20. The decay constant of a radioactive element is 3 xx 10^(-6) "min"^(-1)...

    Text Solution

    |