On average,how many neutrons are released from the fission of a single $U^{235}$ nucleus?

An atomic bomb consists of two pieces of $_{92}U^{235}$ and a source of:

The binding energy per nucleon of deuteron $({ }_{1} H^{2})$ and the helium atom $({ }_{2} He^{4})$ are $1.1 \ MeV$ and $7 \ MeV$ respectively. If two deuteron nuclei fuse to form a single helium nucleus,then the energy released is: (in $MeV$)

The graph of binding energy per nucleon $(BE/A)$ versus mass number $(A)$ is shown in the figure. Which of the following options is correct?

What was the fissionable material used in the bomb dropped at Nagasaki (Japan) in the year $1945$?

In a reactor, $2 \, kg$ of ${ }_{92} U ^{235}$ fuel is fully used up in $30$ days. The energy released per fission is $200 \, MeV$. Given that the Avogadro number, $N_A = 6.023 \times 10^{26} \, \text{per kilo mole}$ and $1 \, eV = 1.6 \times 10^{-19} \, J$. The power output of the reactor is close to $..... \, MW$.