During radioactive decay, atomic nuclei of unstable isotopes: give off nuclear radiation

If this is a true/false question the answer would be true.  Since nuclear reactions involve the nucleus the nuclear radiation would need to be coming from the nucleus since the reaction is not happening anywhere else.

I hope this helps.  Let me know in the comments if the question was asking something else or if my answer is unclear.

The kinetic energy of the liquid increases. hope this !