Fundamental Principles of Organic ChemistryFossil Fuels2671Choose the best answerWhich statement is correct?ANatural gas mainly contains methane.BPetroleum is a pure compound.CCoal gas mainly contains nitrogen.DCoke is highly volatile. Like 0 Discuss 0Share
StoichiometryMass–Volume Relationship2672Choose the best answerWhen the mass of a solid reactant is related to the volume of a gaseous product, which stoichiometric relationship is used?AMass–mass relationshipBMass–volume relationshipCVolume–volume relationshipDNone of these Like 0 Discuss 0Share
Aldehydes and KetonesTollens' Test2673Choose the best answerWhich reagent can distinguish benzaldehyde from acetophenone?AAqueous bromineBTollens' reagentC2,4-DNPH reagentDAqueous FeCl₃ Like 0 Discuss 0Share
LiquidsBoiling2674Choose the best answerWhen a liquid begins to boil, visible bubbles:AAppear throughout the liquid and rise to the surfaceBCannot formCContain only airDIndicate freezing Like 0 Discuss 0Share
MDCAT Chemistry Past Papers Reconduct 2023#Gases#Graham's Law2675Choose the best answerThe statement “Diffusion of gas is inversely proportional to the square root of density at constant temperature and pressure” is known as: (MDCAT Reconduct 2023)AGraham’s LawBBoyle’s LawCAvogadro’s LawDCharles’s Law Like 0 Discuss 0Share