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In nuclear reactions, total number of ……...

In nuclear reactions, total number of `……………` and `……………….` are conserved.

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Protons, neutrons
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Problems on nuclear reactions

In nuclear reactions, we have the conservation of

STATEMENT-I: Consider the following nuclear reaction of an ustable ._(6)^(14)C rarr ._(7)^(14)N + _(-1)^(0)e+ overset(-)v . In a nuclear reaction total energy and momentum is conserved experiments show that the electrons are emitted with a continous range of kinetic energies upto some maximum value. STATEMENT-II: Remaining energy is released as thermal energy.

A : Only in low or medium energy nuclear reactions, the number of protons and number of neutrons are separately conserved. R: In high energy reactions, protons and neutrons can be converted into other particles and a new quantum number, the Baryon number is however, always conserved.

STATEMENT -1 : In any chemical reaction, total No. of molecules are conserved. and STATEMENT -2 : Atom can neither be created nor be destroyed.

Answer the following questions: Are the equations of nuclear reactions (such as those given in Section 13.7) ‘balanced’ in the sense a chemical equation (e.g., 2H2 + O2→ 2 H2O) is? If not, in what sense are they balanced on both sides? If both the number of protons and the number of neutrons are conserved in each nuclear reaction, in what way is mass converted into energy (or vice-versa) in a nuclear reaction? A general impression exists that mass-energy interconversion takes place only in nuclear reaction and never in chemical reaction. This is strictly speaking, incorrect. Explain.

In nuclear fission which is conserved -

Nuclear reactios obey the law of conservation of

CENGAGE CHEMISTRY-NUCLEAR CHEMISTRY-Exercise Fill In The Blanks
  1. The last member of 4n+1 series is an isotope of …………………………………. .

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  2. The conversion of one element into another by aritificial means is ter...

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  3. In nuclear reactions, total number of …………… and ………………. are conserved.

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  4. In exoergic reaction, the total mass of products is ……………………….. than t...

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  5. The disappearance of one atomic mass unit (am u) releases ………………………. ...

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  6. The most effective projectile in the transmutation of heavy element is...

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  7. The hydrogen bomb uses the principle of ……………………….

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  8. The atomic bomb uses the principle of ……………… .

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  9. ………………………….. brings fission in U^(235).

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  10. .(7)N^(14)+ .(0)n^(1)rarr ...................+.(1)H^(1)

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  11. Atoms of the same element possessing identical mass but differing in h...

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  12. Nuclear fusion takes place at very high temperature and hence it is ca...

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  13. The splitting of a heavy nuclei with neutron into two smaller nuclei a...

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  14. The age of archaeological findings can be determined by ……………….. meth...

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  15. The age of the earth has been estimated by …………… dating technique.

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  16. ………………….. emitted by Co-60 can burn cancerous cells.

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  17. In Indai, the first nuclear reactor was established at ………………….. .

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  18. The type of reactions considered to be the principal sources of energy...

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  19. Write the complete nuclear reactions : ltbr. a. .(4)Be^(9)+ .(9)He^(4...

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  20. The transuranic element with longes half - life is …………………….

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