UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Enzymes#Macromolecules3321Choose the best answerCompetitive inhibitors stop an enzyme from working by: (UHS MDCAT 2023)AChanging the shape of the enzymeBMerging with the substrate insteadCBlocking the active site of the enzymeDCombining with the product of the reaction Like 0 Discuss 0Share
ElectrochemistryElectron Transfer and Oxidation Number Change3322Choose the best answerWhich change involves transfer of five electrons per Mn atom?AMnO₄²⁻ → MnO₂BCrO₄²⁻ → Cr³⁺CMnO₄⁻ → Mn²⁺DCr₂O₇²⁻ → 2Cr²⁺ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Discovery of Neutron3323Choose the best answerWhich element did Chadwick bombard with α particles to discover the neutron?ABoronBBerylliumCCarbonDHelium Like 0 Discuss 0Share
LiquidsLatent Heat of Condensation3324Choose the best answerWhich causes the most severe burn under comparable contact conditions?AWater at 90°CBWater at 80°CCSteam at 100°CDWater at 20°C Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Flame Colors3325Choose the best answerWhich compounds produce a deep red colour in fireworks?ACopper compoundsBBarium compoundsCStrontium compoundsDPotassium compounds Like 4 Discuss 0Share