LiquidsVapour Pressure and Temperature1811Choose the best answerVapour pressure of a liquid increases with:ATemperatureBIntermolecular-force strengthCMolecular attractionDDecreasing molecular kinetic energy Like 0 Discuss 0Share
Stoichiometry Element #Mixtures1812Choose the best answerWhich substance can be separated into its components by physical methods?AAirBSodium chlorideCPure waterDCarbon dioxide Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes1813Choose the best answerAn element has isotopes of 50 u and 54 u in a 3:1 ratio. What is its relative atomic mass?A50.5B51C51.5D52 Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Enzymes#Macromolecules1814Choose the best answerWhich option contains the correctly matched pair?APepsin — basic mediumBTrypsin — acidic mediumCPepsin — acidic mediumDSalivary amylase — strongly acidic medium Like 0 Discuss 0Share
Alkyl HalidesReaction of Grignard Reagents with Water1815Choose the best answerReaction of RMgX with water followed by proton transfer produces:AAlcoholBAlkeneCAlkaneDAldehyde Like 0 Discuss 0Share