What do you observe when ethene is passed through alkaline KMnO₄ solution?

Name three compounds formed by ethene and give one use of each compound.

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

How is ethyne prepared in the laboratory?

(a) Draw a diagram

(b) Give an equation

(c) How is pure dry gas collected?