Question

An organic liquid ' $A$ ' containing $C,H$ and $O$ with boiling point $78^{\circ }C$, possessing a rather pleasant odour, on heating with concentrated sulphuric acid gives a gaseous product ' $B$ ' with the empirical formula, $C{H}_2$. ' $B$ ' decolourises bromine water as well as alkaline permanganate solution and takes up one mole of $H_2$ (per mole of $B$ ) in presence of finely divided nickel at high temperature. Identify the substances $A$ and $B$.

Answer 1

$A$ is ethanol because $B$ is an alkene (ethene)