UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Chemistry of Hydrocarbons#Hydration of Alkynes26Choose the best answerPropanone can be prepared from propyne by: (UHS MDCAT 2023)APassing a mixture of propyne and steam over a catalyst, magnesium at 420°CBPassing a mixture of propyne and ethanol over a catalyst, zinc chromateCBoiling propyne with water in the presence of HgSO₄ and H₂SO₄DTreating propyne with iodine and NaOH Like 1 Discuss 0Share
Chemistry of HydrocarbonsHalogenation of Benzene27Choose the best answerIn the simplified electrophilic-substitution model, the attacking electrophile in chlorination is represented as:ACl⁺BCl⁻CCl₂⁻DHCl Like 0 Discuss 0Share
Chemistry of HydrocarbonsPreparation of Alkanes by Hydrogenation28Choose the best answerComplete hydrogenation of one mole of an alkyne to an alkane requires:AOne mole of H₂BTwo moles of H₂CThree moles of H₂DNo H₂ Like 0 Discuss 0Share
MDCAT Chemistry Past PapersIBA MDCAT Chemistry Paper Reconduct 2024#Chemistry of Hydrocarbons#Pi Bond in Alkenes29Choose the best answerIn ethene, how many unhybridized p orbitals overlap to form π bonds? (IBA MDCAT Reconduct 2024)A1B2C4D8 Like 0 Discuss 0Share
Chemistry of HydrocarbonsOzonolysis of Alkenes30Choose the best answerReductive ozonolysis of 2-methylpropene gives:ATwo molecules of methanalBPropanone and methanalCTwo molecules of propanoneDEthanal and methanal Like 0 Discuss 0Share