Chemical EquilibriumDynamic Equilibrium2231Choose the best answerFor A ⇌ B, equilibrium is reached when:AA completely changes into BBExactly 50% of A changes into BCRate of A → B equals rate of B → ADOnly 10% of A changes into B Like 0 Discuss 0Share
LiquidsLiquid–Vapour Dynamic Equilibrium2232Choose the best answerIn a closed container at dynamic equilibrium:AEvaporation stopsBCondensation stopsCRate of evaporation equals rate of condensationDVapour pressure becomes zero Like 0 Discuss 0Share
Chemistry of HydrocarbonsPhysical Properties of Hydrocarbons2233Choose the best answerWhy does the boiling point generally increase as –CH₂– units are added to a homologous series of hydrocarbons?AHydrogen bonding increases.BMolecular size, surface area and dispersion forces increase.CIonic bonds begin to form.DThe molecules acquire permanent ionic charges. Like 0 Discuss 0Share
Alcohols and PhenolsOxidation of Secondary Alcohols2234Choose the best answerOxidation of propan-2-ol gives:APropanalBPropanoneCPropanoic acidDPropene Like 0 Discuss 0Share
Aldehydes and KetonesAldol Condensation2235Choose the best answerAldol condensation occurs in aldehydes or ketones containing:AOnly a carbonyl groupBAt least one α-hydrogen atomCA phenyl groupDTwo carbonyl groups Like 0 Discuss 0Share