Atoms and Nuclei-Mass Defect (NEET Physics): Questions 1 - 2 of 2

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Question number: 1

» Atoms and Nuclei » Mass Defect

MCQ▾

Question

Consider the decay of radium- (Ra 226) atom into an alpha particle and radon- (Rn 222). Then, what is the mass defect of the reaction-

Mass of radium -226 atom = 226.0256 u

Mass of radon - 222 atom = 222.0715 u

Mass of helium - 4 atom = 4.0026 u

Choices

Choice (4) Response
a.

0.0053 u

b.

0.083 u

c.

0.0083 u

d. All of the above

Question number: 2

» Atoms and Nuclei » Mass Defect

MCQ▾

Question

If the mass defect in the formation of helium from hydrogen is 0.5%, then the energy obtained, in kWh, in forming helium from 1 kg of hydrogen will be,

Choices

Choice (4) Response
a.

1.25

b.

125 ⨯ 10 4

c.

1.25 ⨯ 10 8

d.

1.25 ⨯ 10 6

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