(a) What is the molecular formula and structure of the alcohol which can be thought to be derived from pentane?
(b) Write the names of the following functional groups:

(a) The molecular formula and structure of the alcohol is C₅H₁₂O or C₅H₁₁OH (pentanol)

(b) The names of the following functional groups are given below:

(c) When a candle is lighted, the wax melts, rises up the wick and gets converted into vapours. In a candle, there is no way for the proper mixing of oxygen (of air) for burning wax vapours. Hence, the wax vapours bum in an insufficient supply of oxygen (of air) which leads to incomplete combustion of wax. This produces small unburnt carbon particles which rise in the flame, get heated and glow to give out a yellowish light. This makes the candle flame yellow and luminous.