S & P Block ElementsOxides of Alkali Metals41Choose the best answerIn the reaction M + O₂ → MO₂, where MO₂ is a superoxide, the metal M is:ALiBNaCKDBa Like 0 Discuss 0Share
S & P Block ElementsAlkali Metals42Choose the best answerPotassium is stored:AUnder cold waterBIn liquid ammoniaCIn alcoholDIn kerosene Like 0 Discuss 0Share
S & P Block ElementsGroup 2 Reactions with Water43Choose the best answerWhich statement correctly describes the reactions of Group 2 metals with water?ABe reacts vigorously with cold water, whereas Mg does not.BBe is unreactive, Mg reacts mainly with steam, while Ca, Sr and Ba react more readily.CAll Group 2 metals react equally with cold water.DOnly Be and Mg liberate H₂ from water. Like 0 Discuss 0Share
S & P Block ElementsGroup 2 Reactions with Water44Choose the best answerWhich statement concerning magnesium and water is correct?AMg reacts vigorously with cold water.BMg reacts only very slowly with cold water.CMg produces Mg₂O on reaction with water.DMg liberates chlorine from cold water. Like 0 Discuss 0Share
MDCAT Chemistry Past Papers Reconduct 2023#Periodic Table#Periodic Trends45Choose the best answerWhich types of elements are predominantly found in the p-block of the periodic table? (MDCAT Reconduct 2023)AMetalloids onlyBBoth metals and non-metalsCMetals onlyDNon-metals only Like 0 Discuss 0Share