Answer: B (statements 1 and 2). Check the suggested uses of ethanol.
Statement 1: correct. Ethanol is used as a fuel, blended into petrol for car engines (for example in E10 fuel), where it burns to release energy.
Statement 2: correct. Ethanol is an excellent solvent and is the standard solvent for perfumes, dissolving the active fragrance ingredients before it evaporates.
Statement 3: wrong. Polyesters such as Terylene are condensation polymers made from a diol (ethane-1,2-diol) and a dicarboxylic acid, each needing two functional groups so a small molecule can be eliminated. Ethanol has only one –OH group, so it cannot form the polyester chain and is not used to manufacture polyesters.
So statements 1 and 2 are correct uses while statement 3 is not, giving option B. The common error is to confuse ethanol (a mono-ol) with the diol actually used to make polyesters.
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