CBSE Guess > Papers > Important Questions > Class XII > 2007 > Chemistry > Nuclear Chemistry

Nuclear Chemistry

1. Who discovered the phenomenon of radioactivity.
2. Name the disintegration series that starts with U-235
3. Which radioactive metal is used as an ingredient of atomic explosive weapons.
4. Which isotopes are used in nuclear reactor.
5. Complete the following reaction:
   a. ²³Na₁₁ + ____________ --> ²³Mg₁₂ +¹n0
   b. ²⁷Al₁₃ +____________________________³⁰P₁₅ + ¹n0
6. Give one example of the K-capture.
7. What is the value of decay constant.
8. What is the effect of temperature and pressure on the rate of radioactive disintegration.
9. What is the total life of a radioactive element.
10. What is role of heavy water in nuclear reactor?
11. Why a huge amount of energy is released in nuclear fission or nuclear fusion.
12. Write the relation between average life and half life.
13. Write the exponential form of the equation for the radioactive disintegration.
14. What do you mean by radioactive disintegration.
15. C-14 is formed in the upper atmosphere. Why does it not occur at the ground level.
16. How half life period of a radioactive substance predicts about its stability.
17. What is the function of Breeder reactor.
18. Briefly explain ‘Group Displacement Law’
19. Briefly explain nuclear stability in terms of neutron/proton ratio.
20. What is meant by nuclear binding energy? How does it originate.
21. What kinds of elementary particles are used in the artificial transmutation of elements.
22. What is meant by ‘transmutation of electron’
23. Write a short note on ‘Artificial radioactivity’
24. What is nuclear reactor and draw an outline diagram and explain its essential parts.
25. What are the transuranium element.
26. Write short note on hazards of nuclear radiations.
27. What are synthetic element? Mention two synthetic element and write the nuclear equations.
28. What is nuclear fission? What are controlled and uncontrolled fission reaction How can the energy released in such reactions used for practical purpose
29. A freshly cut wood gives 15.3 counts per minute per gram of carbon and half life of C-14 is 5770 years find the age of wood.

1. Solid State
2. Solutions
3. Electrochemistry
4. Chemical Kinetics
5. P Blocks Element
6. D and F Block Elements
7. Coordination Compound
8. Nuclear Chemistry
9. Stereochemistry
10. Functional Group I
11. Polymers
12. Biomolecules
13. Chemistry In Everyday Life
14. Practice Paper 1
15. Practice Paper 2
16. Practice Paper 3