Controlled Nuclear Reaction
Trending Questions
Q. 90Th234→7α+6β+ZXA
Identify ZXA.
Identify ZXA.
- 84Po206
- 92Ur238
- 82Pb206
- 83Bi208
Q. The rate of radioactive decay can not be changed with environmental factors, causing disposal issues for countries with large scale nuclear power plants. Radioactive rate laws are characterized by which of the following?
- Zero order reaction because the rate is independent of the substance.
- First order reaction because the rate depends only on the identity of the substance.
- The overall rate order can not be determined for decaying material because the overall rate order changes for radioactive material when bonded to other elements.
- Second order because the interaction between the radioactive material and other compounds determines the half-life of the substance.
Q. Consider a hydrogen like atom whose energy in nth excited state is given by En=−13.6n2Z2. When this excited atom makes a transition from an excited state to ground state. The most energetic photons have energy Emax=52.224eV and the least energetic photons have energy Emin=1.224eV. Find the atomic number of atom.
- 1
- 2
- 3
- 4
Q. collision theorey
Q. An excited hydrogen atom emits a photon of wavelength λ in returning to the ground state. If R is the Rydberg constant, then the quantum number n of the excited state will be:
- √λR
- √λR−1
- √λR(λR−1)
- √λRλR−1
Q. Boron is used in the nuclear reactor as a moderator.
If this is true enter 1, if false enter 0.
If this is true enter 1, if false enter 0.
Q. A hydrogen like species (atomic number Z) is present in a higher excited state of quantum number n. This excited atom can make a transition to the first excited state by successive emission of two photons of energies 10.20eV and 17.0eV respectively. Alternatively, the atom from the same excited state can make a transition to the second excited state by successive emission of two photons of energy 4.25eV and 5.95eV respectively. Determine the value of Z.
- 2
- 3
- 1
- 4
Q. Consider the following nuclear reaction: X200→A110+B90+ Energy
If the binding energy per nucleon for X, A and B are 7.4 MeV, and 8.2 MeV and 8.2 MeV respectively, the energy released will be:
If the binding energy per nucleon for X, A and B are 7.4 MeV, and 8.2 MeV and 8.2 MeV respectively, the energy released will be:
- 90 MeV
- 110 MeV
- 200 MeV
- 160 MeV
Q.
The fission of takes places effectively only if the bombarding neutrons are very fast.
- True
- False
Q. Identify the nuclear reaction that differs from the rest.
- Positron emission
- K-capture
- β-decay
- α-decay
- γ-decay
Q. An element having a density of 8.24 g cm−3 crystallizes as bcc lattice. The length of the side of the unit cell is 2.6oA. Calculate the number of atoms present in 468g of the element.
- 8.8×1023
- 6.5×1024
- 6.5×1023
- 9.8×1024