1. Name a limitation of the Schrock’s metathesis catalyst.

Air and moisture sensitivity and hence intolerant to the functional groups.

2. Which types of metathesis reactions are used for long chain polymerization?

Ring Opening Metathesis Polymerization (ROMP).

3. Under what condition the Ring Opening Metathesis (ROM) polymerization favored?

Large excess of ethylene (C₂H₄).