Answer :
Which is a secondary alcohol compound and is optically active is a 2-pentanol compound. It is said to be optically active because it has one asymmetric carbon atom, namely the C atom which binds 4 different groups, namely -CH3, -OH, -H, -CH2-CH2-CH3.
Carbohydrates are also optically active and some carbohydrates can rotate the plane of polarization of light.
Optically active compounds
Compounds that are optically active are compounds that can rotate the plane of polarization. A compound is optically active if it has asymmetric C or chiral C atoms. Asymmetric C atoms are C atoms that are bonded to four different elements or molecules.
If an optically active compound has asymmetric atoms or chiral C atoms in the compound, the compound is called an optically active compound. However, not all compounds that have chiral atoms are optical, because if the atom has a plane of symmetry or a plane that can be folded in half with the same side, it means that it is not an optical compound.
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