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Atoms and Nucle...

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  • Question 1
    4 / -1

    Which one is correct about fission?

  • Question 2
    4 / -1

    Consider a radioactive material of half-life 1.0 minute. If one of the nuclei decays now, the next one will decay

  • Question 3
    4 / -1

    In which radioactive disintegration, neutron dissociates into proton and electron

  • Question 4
    4 / -1

    Select the wrong statement

  • Question 5
    4 / -1

    The relationship between λ and half life (T1/2) of a radioactive substance is

  • Question 6
    4 / -1

    The half life (T) and the disintegration constant (λ) of a radioactive substance are related as

  • Question 7
    4 / -1

    In the uranium radioactive series, the initial nucleus is 92U238 and the final nucleus is 82Pb206. When the uranium nucleus decays to lead, the number of α - particles emitted will be

  • Question 8
    4 / -1

    The half life of 131I is 8 days. Given a sample of 131I at time t = 0, we can assert that

  • Question 9
    4 / -1

    Which of the following statements are true regarding radioactivity?
    (I) All radioactive elements decay exponentially with time
    (II) Half life time of a radioactive element is time required for one half of the radioactive atoms to disintegrate
    (III) Age of earth can be determined with the help of radioactive dating
    (IV) Half life time of a radioactive element is 50% of its average life period
    Select correct answer using the codes given below Codes

  • Question 10
    4 / -1

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

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