A 0.10 mol sample of a compound liberates 0.30 mol of CH4 with excess CH3MgBr (only reactions with active hydrogen are counted, one CH4 per active H). The compound is

JEE Main levelSingle correct optionDifficulty 2 of 3hx178

A $0.10 mol$ sample of a compound liberates $0.30 mol$ of $CH X_{4}$ with excess $CH X_{3} MgBr$ (only reactions with active hydrogen are counted, one $CH X_{4}$ per active H). The compound is

Moles of

CH X_{4}

per mole of compound

= 0.30/0.10 = 3

, so there are three active hydrogens. Glycerol has three O-H groups; ethane-1,2-diol and lactic acid have two; propan-1-ol has one.