1. Can there be a partial extinguishment of an obligation by confusion? Explain in a concise manner.

2. If the due date for performance of the obligation is on Sunday and demand was made on that day however the debtor only perform it the next day, may he be considered in delay? Explain in a concise manner.

3. When is tender and refusal not required? Explain in a concise manner.

4. How is consignation made? What is the process? Explain in a concise manner.