Binding energy is the energy equivalent of:

1. mass defect
2. critical mass
3. citical energy
4. nucleon energy
Show Answer
Answer: A
Explanation:
• According to Einstein's theory, it is the mass defect which is converted into binding energy.
4 0 Complains

The binding energy of a nucleus can be calculated by the equation:

1. Δm =ΔEc2

2. ΔE =Δmc2

3. Δm /number of nucleons

4. number of nucleons/Δm

Show Answer
Answer: B
Explanation:
• According to Einstein's theory; mass defect = binding energy and calculated by the Einstein's equation   ΔE =Δmc2
1 0 Complains

The total biniding energy divided by the sum of number of protons and neutrons present in the nucleus is known as:

1. mass defect
2. critical energy
3. binding energy per nucleon
4. nucleon energy
Show Answer
Answer: C
Explanation:
• N/A
1 0 Complains

Greater the binding energy per nucleon:

1. more stable is the nucleus
2. less stable is the nucleus
3. more radioactive is the nucleus
4. none of these
Show Answer
Answer: A
Explanation:
• N/A
1 0 Complains

Which element has the maximum binding energy per nucleon and is more stable?

1. U-235
2. Kr-94
3. Li-7
4. Fe-56
Show Answer
Answer: D
Explanation:
• The nuclei of about 60 atomic mass have maximum biding energy per nucleon and are more stable e.g Fe-56 and Ni-62. Heavier or lighter nuclei have lower binding energy per nucleon and are less stable.
0 0 Complains

U-235 undergoes fission into lighter and more stable isotopes as:

1. Ba-141 and Kr-93
2. Ba-139 and Kr-94
3. Ba-142 and Kr-92
4. Ba-147 and Sr-90
Show Answer
Answer: B
Explanation:
• ₉₂U²³⁵ + ₀n¹ ࢐ ₅₆Ba¹³⁹ + ₃₆Kr⁹⁴ + 3₀n¹
0 0 Complains

The stability of a nucleus depends on:

1. The neutron-to-proton ratio (n/p)
2. the proton-to-neutron ratio (p/n)
3. the mass number
4. the number of electron
Show Answer
Answer: A
Explanation:
• N/A
0 0 Complains

The lower elements (upto Z = 20) having stable nuclei have the neutron-to-proton ratio (n/p) of about:

1. 2
2. 1.5
3. 1
4. 1.2
Show Answer
Answer: C
Explanation:
• N/A
1 101 Complains

For the higher elements (having higher atomic masses), to be stable there must be:

1. n/p > 1
2. n/p < 1
3. n/p = 1
4. n/p = 2
Show Answer
Answer: A
Explanation:
• For the higher elements, to be stable there must be more neutrons than protons i.e n/p >1.
0 0 Complains

A nucleus whose n/p ratio lies above or below the stability belt:

1. is stable
2. is radioactive or unstable
3. does not emit radiations
4. is more stable
Show Answer
Answer: B
Explanation:
• N/A
0 0 Complains