Which of the following compounds exhibits optical isomerism?

Which among the following compounds shows optical activity?

Which instrument is used to measure the rotation of plane-polarized light?

Total possible stereoisomers from the given compound $CH_3-CH=CH-CH(OH)-CH(OH)-CH_3$ will be:

Which of the following compounds will exhibit optical isomerism?

Explain the following terms:
$(i)$ Plane polarised light
$(ii)$ Optical activity
$(iii)$ Chirality
$(iv)$ Chiral centre (atom)
$(v)$ Enantiomers
$(vi)$ Diastereomers
$(vii)$ Meso compounds
$(viii)$ Plane of symmetry and Achiral molecule
$(ix)$ Centre of symmetry