You are given the following molecular formulae of some hydrocarbons:

C₅H₈; C₇H₁₄; C₅H₁₀; C₇H₁₂; C₆H₁₂;

(a) Which formula represent cyclohexane as well as hexane?

(b) Which formula represent benzene?

(c) Which three formulae represent open chain

(d) Which two formulae represent unsaturated hydrocarbons having double bonds?

(e) Which three formulae can represent cyclic hydrocarbons?