Atomic StructureFormation of Ions116Choose the best answerA positive ion is formed from a neutral atom by:AIncreasing its nuclear chargeBGaining protonsCLosing electronsDLosing protons Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes117Choose the best answerWhy do isotopes of the same element show nearly the same chemical properties?ANumber of neutronsBElectronic configurationCMass numberDRelative atomic mass Like 1 Discuss 0Share
LiquidsBoiling Point118Choose the best answerThe temperature at which the vapour pressure of a liquid becomes equal to the external pressure is its:ACritical temperatureBBoiling pointCMelting pointDTriple point Like 0 Discuss 0Share
LiquidsImportance of Hydrogen Bonding119Choose the best answerHydrogen bonding plays an important role in:ASolubility of alcohols in waterBStabilization of biological moleculesCBoth A and BDMetallic bonding Like 0 Discuss 0Share
Aldehydes and KetonesPreparation from Calcium Salts of Carboxylic Acids120Choose the best answerWhich combination is correctly matched?ACalcium formate → Methanal; Calcium acetate → Propanone; Calcium formate + calcium acetate → EthanalBCalcium formate → Propanone; Calcium acetate → Ethanal; Calcium formate + calcium acetate → MethanalCCalcium formate → Methanal; Calcium acetate → Ethanal; Calcium formate + calcium acetate → PropanoneDCalcium formate → Ethanal; Calcium acetate → Propanone; Calcium formate + calcium acetate → Methanal Like 0 Discuss 0Share