Draw a labelled diagram of nuclear reactor and explain the use of various parts. Name a material used as a moderator.

What is nuclear fusion? Write the required conditions for this reaction and explain why fusion bombs are more dangerous than fission bombs.

In nuclear fusion, $0.993 \mathrm{g}$ helium is formed by $1 \mathrm{g}$ hydrogen. If the efficiency of the generator be $5\%$, then calculate the energy obtained in kilowatt-hour $\left(\mathrm{kWh}\right)$.

The energy released per fission of ${}_{92}U^{235}$ nucleus is $200 MeV$. Compute the energy released in joule if $100 \mathrm{g}$ of ${}_{92}U^{235}$ is fissioned. Avogadro’s number is $6.02\times {10}^{23} {\mathrm{mole}}^{-1}$.

Calculate the useful power produced in a reactor of $40\%$ efficiency in which ${10}^{14}$ fissions are taking place per second, and the energy per fission is $250 \mathrm{MeV}$.

A $U^{235}$ reactor is producing nuclear energy at a rate of $32,000 \mathrm{kW}$. How many nuclei of $U^{235}$ are fissioned per second? How much $U^{235}$ would be consumed in $1000$ hours? Assume an average energy of $200 \mathrm{MeV}$ released per fission. Take Avogadro’s number as $6\times {10}^{23} {\mathrm{mol}}^{-1}$.