Final answer:
Intra-vascular hemolysis involves the destruction of red blood cells (RBCs) within blood vessels, and it is true.
Step-by-step explanation:
True. Intra-vascular hemolysis involves the destruction of red blood cells (RBCs) within blood vessels. This can occur during transfusion with mismatched blood types or in conditions such as hemolytic disease of the newborn. The destruction of RBCs in the blood vessels can be caused by complement and antibody reactions.