The total number of optically active compunds formed in the following reaction is :

Total number of products formed in the following reaction is:

Total number of products formed in the following reaction is:

Number of optically active isomer is/are :

Number of optically active isomer is/are :

Total number of optical active stereoisomers of the following compound is : CH_(3)-CH=CH-CHOH-CH=CH-CH_(3)

Total number of optical active isomers of the following compounds are respectively :