Atoms and NucleiNuclear Fission and Fusion (NEET (NTA)National Eligibility cum Entrance Test (Medical) Physics): Questions 1  4 of 4
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Question number: 1
» Atoms and Nuclei » Nuclear Fission and Fusion
Question
Which of the following are not examples of nuclear fusion?
(1) Formation of Ba and Kr from U ^{235}
(2) Formation of Pu ^{235} from Th ^{235}
(3) Formation of water from hydrogen and oxygen
(4) Formation of He from H
Select the correct answers and mark it according to the following codes:
Choices
Choice (4)  Response  

a.  1 and 2 are correct 

b.  1 and 3 are correct 

c.  1, 2 and 3 are correct 

d.  2 and 4 are correct 

Question number: 2
» Atoms and Nuclei » Nuclear Fission and Fusion
Question
Power output of _{92} U ^{235} reactor if it takes 30 days to use up 2 kg of fuel, and if each fission gives 185 MeV of useable energy is
Choices
Choice (4)  Response  

a.  5.846 kW 

b.  0.5846 kW 

c.  58.46 MW 

d.  Question does not provide sufficient data or is vague 

Question number: 3
» Atoms and Nuclei » Nuclear Fission and Fusion
Question
The energy released per fission of U ^{235} is about 200 MeV. A reactor using U ^{235} as fuel is producing 1000 kilowatt power. The number of U ^{235} nuclei undergoing fission per sec is, approximately
Choices
Choice (4)  Response  

a.  3 × l0 ^{16} 

b.  2 × 10 ^{8} 

c.  10 ^{6} 

d.  931 

Question number: 4
» Atoms and Nuclei » Nuclear Fission and Fusion
Question
Fission of nuclei is possible because the binding energy per nucleon in them,
Choices
Choice (4)  Response  

a.  Increases with mass number at low mass numbers 

b.  Decreases with mass number at high mass number 

c.  Decreases with mass number at low mass numbers 

d.  Increases with mass number at high mass number 
