Give the names and structure formulae of one saturated cyclic hydrocarbon and one unsaturated hydrocarbon.

39 What are hydrocarbons? Explain with examples. 39 Explain the meaning of saturated and unsaturated hydrocarbons with two examples each. 39 Give one example of a hydrocarbon, other than pentane, having more than three isomers. 39 How many isomers of the following hydrocarbons are possible?

(i) C₃H₈,

(ii) C₄H₁₀,

(iii) C₅H₁₂,

(iv) C₆H₁₄,