UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Atomic Structure#Isotopes26Choose the best answerWhich element provides the reference isotope used for the atomic-mass scale?AHBCCPDCl Like 1 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Benzene & Aromatic Compounds#Friedel-Crafts Alkylation27Choose the best answerBenzene reacts with an alkyl halide in anhydrous AlCl₃ to form an alkylbenzene. What is this reaction called?AHalogenationBFriedel-Crafts acylation reactionCFriedel-Crafts alkylation reactionDSulphonation Like 0 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Alcohols#Alcohols and Phenols28Choose the best answerVinyl alcohol and acetaldehyde are:APosition isomersBChain isomersCMetamersDTautomers Like 0 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Carboxylic Acids#Preparation of Acyl Chlorides29Choose the best answerMr. Khan mix acetic acid with thionyl chloride. Which product is obtained? (UHS MDCAT 2023)ACH₃COO + SO₂ + HClBCH₃Cl + CH₃COClCCH₃COOCH₃ + SO₂DCH₃COCl + SO₂ + HCl Like 1 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Chemistry of Hydrocarbons#Hydration of Alkynes30Choose 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