TRUE OR FALSE (Please also explain how each are used. Thanks!)

8. Ordinary diligence is otherwise referred to as diligence of a good father of a family.

9. Fortuitous events as a cause of non-fulfillment of an obligation excuses the obligor from being liable.

10. As a rule, there is no delay unless there is either notarial or judicial demand for the fulfillment of an obligation.

11. When there is delay committed by both the parties to an obligation, there is mora solvendi.

12. Reciprocal obligations give rise to mutual obligations. here is mora solvendi.

13. Deceit is a manifestation of the intentional evasion to perform an obligation.

14. There is negligence when the necessary degree of diligence is not displayed in the performance of an obligation.

15. When there is criminal liability, there is also, civil liability.