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Atoms and Nucle...

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  • Question 1
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    The particles emitted by radioactive decay are deflected by magnetic field. The particles will be

  • Question 2
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    In the given nuclear reaction A, B, C, D, E represents

  • Question 3
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    If half life of a radioactive element is 3 hours, after 9 hours its activity becomes

  • Question 4
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  • Question 5
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    A radioactive sample with a half life of 1 month has the label \"Activity = 2 micro curies on 1.8.1991.\" What will be its activity two months later?

  • Question 6
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    At any instant the ratio of the amount of radioactive substances is 2 : 1. if their half lives be respectively 12 and 16 hours, then after two days, what will be the ratio of the substances

  • Question 7
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    Which of the following isotopes is used for the treatment of cancer?

  • Question 8
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    If half-life of a radioactive atom is 2.3 days, then its decay constant would be

  • Question 9
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    A radioactive element 90X238decays into 83Y222. Thenumber of β–particles emitted are

  • Question 10
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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

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