Stoichiometry#Atomic Structure#Isotopes311Choose the best answerWhich statement correctly defines relative atomic mass?AThe total number of protons and neutrons present in an atomBThe mass of the most abundant isotope of an elementCThe average mass of all atoms of an element relative to 1/12 of the mass of a carbon-12 atom, taking into account their natural isotopic abundancesDThe mass of an atom expressed in grams Like 0 Discuss 0Share
KMU MDCAT 2024 Chemistry#Carbocations#Fundamental Principles of Organic Chemistry312Choose the best answerThe carbon atom carrying positive charge and attached to three other atoms or groups is called (KMU MDCAT 2024)ACarbanionBCarbeneCCarbocationDOxonium Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Polonium and Radium#Radioactivity313Choose the best answerWhich two radioactive elements did Marie and Pierre Curie isolate from pitchblende?AUranium and thoriumBPolonium and radiumCLead and bismuthDRadium and uranium Like 0 Discuss 0Share
Atomic StructureHund's Rule314Choose the best answerWhich statement describes Hund's rule rather than Pauli's exclusion principle?AAn orbital can contain a maximum of two electronsBPaired electrons in one orbital have opposite spinsCDegenerate orbitals are singly occupied before pairingDNo two electrons have identical sets of four quantum numbers Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Aldehydes and Ketones#Carbonyl Compounds315Choose the best answerQ.90 Aldehyde reacts with:AKetones are more easily oxidizedBIt is always difficult to oxidize aldehydeCMild oxidizing agent & strong oxidizing agent bothDOnly strong oxidizing agent Like 0 Discuss 0Share