What are the sources for alkynes? Give the general formula of alkynes.

Give an example of isomers shown by triple bond hydrocarbons (alkynes) and write their IUPAC names.

Give the method of preparation of ethyne by: 1,2-dibromoethane.

Name the organic compound which:

(a) is a tetrahedral molecule.

(b) is a planar molecule.

(c) is a linear molecule.

(d) forms a red precipitate with ammoniacal solution of copper (I) chloride.

(e) is known as paraffin.

(f) is known as olefin.

(g) will give ethyne (acetylene) gas when treated with water.