Give the name and structrues of six `C` atom cyclic diene with lowest molecular mass that shows only geometrical isomers (diastereomers) and not optical isomers.

Give the name and structure of the lowest molecular mass cumulative polyene that shows only geometrical isomeris ( diastereomers ) and not optical isomers.

Give the structural formula of an unsaturated hydrocarbon with the lowest number of C atoms (or with lowest molecular mass) which shows: a. Optical isomers b. Geometrical isomers c. Both optical and geometrical isomers

Give the structural formula of a cyclic alkyne with the lowest number of C atoms and showing: a. Both geometrical and optical isomerisms. b. Geometrical isomerism with meso stereoisomers.

In this paragraph, some statements are given based on isomerism. Read the following statements given for every question and provide the answer. Which of the following structrues of a cyclic alkene with the lowest number of C atoms shows both geometrical and optical isomerism?

Give the structure of an optically active alkene (A) having the lowest molecular mass, which on catalytic hydrogenation gives an optically inactive compound (B) .

Given structures are (A) resonating structures (B) tautomers (C) geometrical isomers (D) optical isomers