MDCAT Chemistry Past Papers 2024Sindh MDCAT Chemistry Past Paper 2024#Atomic Structure#Quantum Numbers381Choose the best answer"In an orbital of an atom, no two electrons can have the same set of four quantum numbers, at least one quantum number must be different." This statement is:AAufbau principleBPauli's exclusion principleCHund's ruleDWissewser rule Like 0 Discuss 0Share
Atomic StructureQuantum Numbers382Choose the best answerWhich set of quantum numbers is NOT allowed?An = 1, ℓ = 1, mℓ = +1, mₛ = +½Bn = 1, ℓ = 0, mℓ = 0, mₛ = +½Cn = 1, ℓ = 0, mℓ = 0, mₛ = −½Dn = 2, ℓ = 0, mℓ = 0, mₛ = +½ Like 0 Discuss 0Share
Alcohols and PhenolsPreparation of Alcohols by Reduction of Carboxylic Acids383Choose the best answerCH₃COOH + LiAlH₄/H₃O⁺ produces:ACH₃CHOBCH₃CH₂OHCCH₃COCH₃DCH₄ Like 0 Discuss 0Share
ElectrochemistryOxidation Number384Choose the best answerThe apparent charge assigned to an atom in a compound or ion is called:AValencyBCoordination numberCOxidation numberDCharge number Like 0 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Benzene & Aromatic Compounds#Friedel-Crafts Alkylation385Choose 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