Energy in the sun is generated mainly by

Which of the following nuclear fragments corresponding to nuclear fission between a neutron $\left({ }_{0}^{1} n\right)$ and a uranium isotope $\left({ }_{92}^{235} U\right)$ is correct?

Assertion: Heavy water is a better moderator than normal water.
Reason: Heavy water absorbs neutrons more efficiently than normal water.

The binding energy per nucleon in deuterium and helium nuclei are $1.1 \, MeV$ and $7.0 \, MeV,$ respectively. When two deuterium nuclei fuse to form a helium nucleus,the energy released in the fusion is ........... $MeV$.

Control rods used in nuclear reactors are made of:

When two deuterium nuclei fuse together to form a tritium nucleus,what is the other product released?