Fill in the blanks

1. Complete the nuclear equation :

₇N¹⁴+ ₂He⁴–à_____________

2. Nuclear reaction produces radioactive and non-radio active __________
3. _____________ used to generate electricity.
4. Control rods are made up of ___________________
5. The energy produced in the stars is due to _____________
6. Gamma rays can cause ____________ in living cells.
7. Increasing fissionable isotope of Uranium in the natural uranium is called_________
8. The nuclear reaction that cannot be controlled is _____________
9. ________________ is an example of uncontrolled fission reaction

1 marks/2 marks

1. What is artificial radioactivity? Give an example
2. In nuclear reaction the products obtained are very less
3. Define nuclear fission
4. Define controlled fission reaction
5. Mention the types of reactors, with their purpose(use)
6. What is nuclear power reactor?
7. Which are the substances used as moderators?
8. Name some of the coolants used in nuclear reactors.
9. List out the nuclear power reactors in India
10. Define nuclear fusion? Give an example
11. Nuclear fusion is desirable than nuclear fission. Justify
12. The nuclear materials shall be disposed carefully./What are the harmful effects of radioactive materials
13. What is nuclear energy?
14. Name the fuels used in nuclear reactors

3-4 marks

1. What are the significant characteristics of radio activity?
2. What is chain reaction? Draw the schematic diagram of nuclear fission reaction of U235 and also write the equation
3. What are the types of chain reaction? Define each
4. What is enrichment of Uranium? Why is it required?
5. Draw the diagram of nuclear reactor. Mention its parts
6. Explain about the parts of nuclear reactor
7. List out the differences between nuclear fission and nuclear fusion
8. How are the nuclear wastes are disposed?/What are the precautions taken during disposal of nuclear wastes?
9. Differentiate between chemical reaction and nuclear reaction