Atoms and Nuclei-Nuclear 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

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MCQ▾

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 3 are correct

b.

2 and 4 are correct

c.

1 and 2 are correct

d.

1,2 and 3 are correct

Question number: 2

» Atoms and Nuclei » Nuclear Fission and Fusion

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MCQ▾

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.

58.46 MW

c.

0.5846 kW

d.

All of the above

Question number: 3

» Atoms and Nuclei » Nuclear Fission and Fusion

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MCQ▾

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.

10 6

b.

3 × l0 16

c.

2 × 10 8

d.

931

Question number: 4

» Atoms and Nuclei » Nuclear Fission and Fusion

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MCQ▾

Question

Fission of nuclei is possible because the binding energy per nucleon in them,

Choices

Choice (4) Response

a.

Increases with mass number at high mass number

b.

Decreases with mass number at low mass numbers

c.

Increases with mass number at low mass numbers

d.

Decreases with mass number at high mass number

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