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Radioactive is due to...

Radioactive is due to

A

stable electrons configuration

B

stable nucleus

C

unstable nucleus

D

unstable electronic configuration.

Text Solution

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The correct Answer is:
C
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DINESH PUBLICATION-NUCLEAR AND RADIO CHEMISTRY-Revision Questions from Competitive Exams
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  2. Which of the following does not contain material particle

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  3. Radioactive is due to

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  4. C^(14) has a half- life of 5760 years. 100mg of the sample containing ...

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  5. The reaction .(1)D^(2) + .(1)T^(3) rarr .(2)He^(4) + .(0)n^(1) is ...

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  6. A radioactive isotope decays at such a rate that after 96 min, only 1/...

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  7. Which of the following is used as neutron absorber in the nuclear reac...

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  8. Insert the missing figure in the following .(25)Mn^(55) (n, gamma) rar...

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  9. The half life of a radioactive element is 30 min. One sixteenth of th...

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

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

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  12. In nuclear reaction .(4)Be^(9)+.(2)He^(4)rarr.(6)C^(12)+X,X will be

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  13. In a radioactive decay, an emitted electron comes from

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  14. Which of the following statements is wrong ?

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

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  16. Energy released in the nuclear fusion reaction is : ""(1)^(2)H + ""(1...

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  17. Positron has mass equal to

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  18. Which of the following is (n,) type rection ?

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  19. Half life of a radioactive substance is 60 min. After 3 hours, the fra...

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  20. In radioactive transformation ""(92)U^(235) to ""(82)Pb^(206) , the nu...

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