MDCAT Chemistry Past Paper 2023#Capillary Action#Liquids1096Choose the best answerWater rises in a capillary tube because of: (MDCAT 2023)ACohesive force & adhesive forces are the sameBAdhesive forces of molecules exceed cohesive forceCCohesive force is greater than adhesive forceDCohesive force and adhesive force to explain the property in the above question is irrelevant Like 0 Discuss 0Share
ElectrochemistryRules and Exceptions of Oxidation Number1097Choose the best answerWhat is the oxidation state of oxygen in KO₂?A−1/2B−2C−1D−3 Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Equilibrium Constant1098Choose the best answerA reversible reaction is at dynamic equilibrium when:AReactants and products have equal concentrationsBForward and reverse reaction rates become equalCBoth reactions stop completelyDReactants are completely converted into products Like 0 Discuss 0Share
Periodic TableAtomic Radius Trend1099Choose the best answerWhich comparison between Al and Ga is correct according to the usual periodic-trend explanation?AGa is considerably larger than Al.BAl and Ga have exactly equal radii.CGa is slightly smaller than Al.DGa is smaller because it has fewer occupied shells. Like 0 Discuss 0Share
Chemistry of HydrocarbonsFriedel–Crafts Acylation1100Choose the best answerFriedel–Crafts acylation introduces a:AAlkyl groupBAcyl groupCNitro groupDSulphonic acid group Like 0 Discuss 0Share