The fission chain reaction in a nuclear reactor can be controlled by introducing _______________?
A. Iron rods
B. Graphite rods
C. Cadmium rods
D. Platinum rods
Average energy required to remove one nucleon from the nucleus is called__________________?
Average energy required to remove one nucleon from the nucleus is called__________________?
A. Binding energy per nucleon
B. Energy of decay
C. Destruction energy
D. All of above
Radioactive decay obeys which one of the following law ?
Radioactive decay obeys which one of the following law ?
A. N=Noe-λt
B. N=Noeλt
C. N=Noe-λt/2
D. No=N(1+eλt)
The diameter of an atom is approximately_______________?
The diameter of an atom is approximately_______________?
A. 10-12m
B. 10-11m
C. 10-10m
D. 10-14m
The bombardment of nitrogen with alpha particles will produce______________?
The bombardment of nitrogen with alpha particles will produce______________?
A. Neutron
B. Proton
C. Electron
D. Positron
Mass defect per nucleon is ___________________?
Mass defect per nucleon is ___________________?
A. The binding energy of the nucleus
B. Packing fraction
C. The average energy of the nucleus
D. All of above are one and the same thing
Nuclear forces exist between ___________________?
Nuclear forces exist between ___________________?
A. Proton-proton
B. Proton-neutron
C. Neutron-neutron
D. All of the above
Transuranic elements have an atomic number_______________?
Transuranic elements have an atomic number_______________?
A. Greater than 72
B. Greater than 82
C. Greater than 92
D. Greater than 102
The energy liberated when one atom of U-235 undergoes fission reaction is________________?
The energy liberated when one atom of U-235 undergoes fission reaction is________________?
A. 200MeV
B. 40MeV
C. 30MeV
D. 20MeV
Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property_____________?
Radioactivity is a ______ (A) Spontaneous activity (B) Chemical property_____________?
A. A & B
B. B & C
C. C & A
D. A B & C