Question

You are given the following molecular formulae of some hydrocarbons:
C₅H₈; C₇H₁₄; C₆H₆; C₅H₁₀; C₇H₁₂; C₆H₁₂

Which three formulae represent open chain unsaturated hydrocarbons having double bonds?

Answer 1

C₇H_14, C₅H_10 ,C₆H₁₂ are the molecular formulae for the open chain unsaturated hydrocarbons having double bonds, as they correspond to the general formula of alkenes, i.e. C_nH_2n,​ where n is the number of carbon atoms in its one molecule.