It depend on your goal. But I suggest you to choose that subject in which you are very good in that subject and you can continue your higher education in that subject. It means if you are good in chemistry than you can choose chemistry in ug and pg. But in case you will do bsc program course you can do msc in any of your bsc subject. So if you are not clear you can choose it.

Helloo.

Both bsc(Hons) and bsc are the undegraduate degrees.

The bsc(Hons) is more standard degree compared to the general bsc.

If you want to learn about the detailed subject of maths or physics or chemistry it is advisable to take bsc(Hons) but if you want to have multi disciplinary approach you Can take general bsc.

Hope you understand.

All the best