Write down the structural formulae of the following compounds.

a) Cyclopentane

b) Cyclobutene

Write down the IUPAC names of the compounds given below

a)

b)

c)

d) CH₃—CH₂—CH₂—C ≡ CH

e) CH₃—CH₂—CH₂—OH

f) CH₃—CH₂—O—CH₃

g) CH₃—CH₂—CH₂—CH₂—CH₂–COOH

Write the structural formulae of all possible isomers of the compound with molecular formula C₄H₁₀O. Identify the different isomer pairs from them and find the type of isomerism to which each pair belongs.

Find three pairs of isomers from the compounds given below. Identify the type of isomerism to which each pair belongs.

a) Propan-1-ol

b) 2,2,3,3-Tetramethylbutane

c) Octane

d) Propan-2-ol

e) Methoxyethane

The structural formulae of two organic compounds are given.

(i) CH₃—O—CH₂—CH₃

(ii) CH₃—CH₂—CH₂—OH

a) What are the IUPAC names of these compounds?

b) Write one similarity and one difference between these two compounds.

c) What is this phenomenon known as?