Chain Reaction of Uranium

Q. Which of these statements are correct regarding Uranium isotopes?

1. U-238 is the most abundant isotope of Uranium
2. U-238 is more stable than the U-235
3. U-236 is not found in nature due to high instability
4. U-235 is majorly used as the nuclear fuel

Q. Which of these statements are correct regarding Uranium isotopes?

1. U-238 is the most abundant isotope of Uranium
2. U-238 is more stable than the U-235
3. U-236 is not found in nature due to high instability
4. U-235 is majorly used as the nuclear fuel

Q. U-235 requires a neutron to be bombarded into it to undergo fission because

1. The energy of U-235 increases due to collision with the incoming neutron
2. The U-235 nucleus absorbs the neutron and becomes U-236 which is highly unstable
3. The neutron due to its high energy breaks apart the nucleus
4. None of the above.

Q. The number of neutrons accompanying the formation of ${}_{54}^{139}Xe$ and ${}_{38}^{94}Sr$ from the absorption of a slow neutron by ${}_{92}^{235}U$, followed by nuclear fission is:

1. \N
2. 2
3. 1
4. 3

Q. The number of neutrons accompanying the formation of ${}_{54}^{139}Xe$ and ${}_{38}^{94}Sr$ from the absorption of a slow neutron by ${}_{92}^{235}U$, followed by nuclear fission is:

1. \N
2. 2
3. 1
4. 3