No. It is not allowed as it is done with the sole intention of getting additional points.
Yes, if you have now something different info to share, then you can make more than one comment on any article.
No this is not allowed by admin
If you do it many times then admin can ban your account
Commenting with the same words everytime will get you banned.
It is called Posting for Points only. Also you will not have contributed anything to OC by doing so.
No ! It is an illegal activity on this site. Never try to do so just in sake of points. @admin can ban/block you.
repeating a comment absolutely not allowed in oc you will be considered as spam and your account will be blocked by admin