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Atoms and Nucle...

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  • Question 1
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    A radio isotope has a half life of 75 years. The fraction of the atoms of this material that would decay in 150 years will be

  • Question 2
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  • Question 3
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    The activity of a sample is 64 × 10–5 Ci. Its half-life is 3 days. The activity will become 5 × 10–6 Ci after

  • Question 4
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    A nucleus of an element 84X202 emits an α–particle first, a β–particle next and then a gamma photon. The final nucleus formed has an atomic number

  • Question 5
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    3.8 days is the half-life period of a sample. After how many days, the sample will become 1/8th of the original substance

  • Question 6
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    A radioactive substance emits

  • Question 7
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    The large scale destruction, that would be caused due to the use of nuclear weapons is called

  • Question 8
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    Given a sample of Radium-226 having half-life of 4 days. Find the probability, a nucleus isintegrates after 2 half lives

  • Question 9
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    A radioactive sample has half-life of 5 years. Probability of decay in 10 years will be

  • Question 10
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