Sindh MDCAT 2021 Chemistry#Alkenes#Chemistry of Hydrocarbons111Choose the best answerDehydration of Ethanol produces:AEthyneBEthaneCEtheneDWater gas Like 0 Discuss 0Share
Stoichiometry Element #Mixtures112Choose the best answerWhich substance can be separated into its components by physical methods?AAirBSodium chlorideCPure waterDCarbon dioxide Like 0 Discuss 0Share
Chemistry of HydrocarbonsPreparation of Alkynes by Double Dehydrohalogenation113Choose the best answerAlkynes are commonly prepared by double dehydrohalogenation of:AGeminal or vicinal dihalidesBAlcohols onlyCAldehydes onlyDCarboxylic acids Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Electrochemistry#Electrolysis114Choose the best answerQ.92 In Castner Kellner cell:ANaOH + H₂ are produced at cathodeBCl₂ is produced at anodeCNaOH + H₂ are produced at anodeDNaOH + H₂ are produced at cathode & Cl₂ is produced at anode Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules115Choose the best answerWhich sample contains the greatest number of molecules?A2 mol H₂B4 mol CH₄C6 mol SO₂D10 mol O₂ Like 0 Discuss 0Share