Probably not. It's a cumulene system with odd number of consecutive double bonds. So it shows only geometrical isomerism not optical.

Understanding Optical Isomerism
Optical isomerism occurs due to the presence of chiral centers in a molecule. A chiral center is typically a carbon atom bonded to four different substituents, leading to non-superimposable mirror images.
Analyzing Cl-CH=C=C=CH-Cl
1. Structure Overview
- The compound Cl-CH=C=C=CH-Cl features a linear arrangement with two chlorine atoms at both ends.
2. Chirality Assessment
- For optical isomerism to occur, we need to identify chiral centers.
- In this molecule, the carbon atoms involved in the double bonds do not have four distinct groups attached to them.
- Each carbon in the double bond is bonded to either a hydrogen or another carbon and has the same substituents on either side.
3. Symmetry Consideration
- The presence of two chlorine atoms at the terminal ends introduces symmetry.
- This symmetry implies that the molecule can be superimposed on its mirror image, negating the possibility of chirality.
Conclusion
- The compound Cl-CH=C=C=CH-Cl does not exhibit optical isomerism due to the lack of chiral centers and the symmetry present in its structure.
- Without chirality, it cannot form non-superimposable mirror images, which are essential for optical isomerism.
This assessment reinforces the idea that optical isomerism is highly dependent on the structural arrangement of substituents around chiral centers.