Sindh MDCAT 2022 Chemistry#Aldehydes and Ketones#Reactions of Acetone2731Choose the best answerQ.71 Acetone gives:AFehling solution test positiveBSilver mirror test positiveCLucas test positiveDIodoform test positive Like 0 Discuss 0Share
StoichiometryLimiting Reagent2732Choose the best answerWhich statement about a limiting reagent is FALSE?AIt is completely consumedBIt limits the amount of product formedCIt is always the reactant with the smaller initial massDIts complete consumption stops further product formation Like 0 Discuss 0Share
BasicsStoichiometry #Physical and Chemical Changes2733Choose the best answerWhich change leaves the chemical composition of a substance unchanged?APhysical changeBChemical changeCNuclear changeDAtomic change Like 0 Discuss 0Share
Chemistry of HydrocarbonsPhysical Properties of Hydrocarbons2734Choose the best answerWhich statement best describes the physical state of higher members of a hydrocarbon homologous series?AThey remain gases regardless of chain length.BIncreasing molecular size can eventually change members from gases to liquids and then solids.CAll C₁₆ hydrocarbons must be solids.DMolecular structure has no effect on physical state. Like 0 Discuss 0Share
Atomic StructureHydrogen Spectrum and Balmer Series2735Choose the best answerIn the Balmer series of hydrogen, which transition produces the third spectral line?An = 5 → n = 2Bn = 5 → n = 1Cn = 4 → n = 2Dn = 4 → n = 1 Like 0 Discuss 0Share