The stable nucleus that has a radius half of the radius of Fe56 is:

1. Li7 

2. Na21

3. S16

4. Ca40

Subtopic:  Nucleus |
 66%
From NCERT
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Which of the following is used as a moderator in nuclear reactors? 

1. Plutonium 

2. Cadmium 

3. Heavy water

4. Uranium 

Subtopic:  Nuclear Energy |
 80%
From NCERT
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The binding energy per nucleon of deuterium and helium atom is 1.1 MeV and 7.0 MeV. If two deuterium nuclei fuse to form a helium atom, the energy released is:

1. 19.2 MeV

2. 23.6 MeV

3. 26.9 MeV 

4. 13.9 MeV

Subtopic:  Nuclear Binding Energy |
 75%
From NCERT
PMT - 2001
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In a fission reaction,

\(^{236}_{92}U\rightarrow ~^{117}X~+~^{117}Y~+~^1_0n~+~^1_0n,\) the binding energy per nucleon of X and Y is 8.5 MeV whereas that of \(^{236}U\) is 7.6 MeV. The total energy liberated will be about:

1. 2000 MeV

2. 200 MeV

3. 2 MeV 

4. 1 keV

Subtopic:  Nuclear Binding Energy |
 76%
From NCERT
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A nuclear reaction along with the masses of the particle taking part in it is as follows;

   A  +  B    C  +  D  +  Q MeV
1.002  1.004   1.001  1.003
amu     amu     amu   amu

The energy Q liberated in the reaction is:

1. 1.234 MeV

2. 0.931 MeV

3. 0.465 MeV

4. 1.862 MeV

Subtopic:  Mass-Energy Equivalent |
 75%
From NCERT
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When a deuterium is bombarded on O168 nucleus, an α-particle is emitted, then the product nucleus is:

1. N137 

2. B105

3. B4e9 

4. N147P

Subtopic:  Types of Decay |
 76%
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The mass of N157 is 15.00011 amu, mass of O168 is 15.99492 amu and mp= 1.00783 amu. Determine the binding energy of the last proton of \({ }_8 O_{16}\).

1. 2.13 MeV

2. 0.13 MeV 

3. 10 MeV 

4. 12.13 MeV

Subtopic:  Nuclear Binding Energy |
 51%
From NCERT
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The power obtained in a reactor using U235 disintegration is 1000 kW. The mass decay of \(U^{235}\) per hour is:

1. 1 microgram           

2. 10 microgram       

3. 20 microgram     

4. 40 microgram

Subtopic:  Nuclear Energy |
From NCERT
PMT - 2011
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In the nuclear reaction: X(n, α)3Li7, the term X will be:

1. B105 

2. B95

3. B115

4. H2e4

Subtopic:  Types of Decay |
From NCERT
PMT - 2001
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In a radioactive decay process, the negatively charged emitted β-particles are:

1. The electrons present inside the nucleus.
2. The electrons produced as a result of the decay of neutrons inside the nucleus.
3. The electrons produced as a result of collisions between atoms.
4. The electrons orbiting around the nucleus.
Subtopic:  Types of Decay |
 82%
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