Write IUPAC name of the compound having the formula n-C₄H₁₀.

38 Explain the term ‘isomers’. Give one example of isomers. 38 Write (i) structural formula, and (ii) electron-dot structure, of any one isomer of n-heptane (C₇H₁₆). 38 Give the IUPAC names for the following:

39 What are hydrocarbons? Explain with examples.