Explain optical activity of 2-chlorobutane

Iodoform is obtained by the reaction of acetone with hypoiodite but not with iodide I on. Explain. (b) Optically active 2-iodobutane on treatment with Nal in acetone gives a product which does not show optical activity. Why?

How will you prepare ethanol, propan-2-ol-and 2-methyl propane-2-ol from Grignard's reagent ? Define optical activity. Explain optical activity of lactic acid.

Comment on optical activity of the products. They are :

The number of optical active isomers of 2,4 dibromobutane are

Isomerism : optical activity in zero chiral molecules, chiral atoms and chiral molecules, optical activity and optical isomerism