Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model781Choose the best answerWhat does the negative sign in the electron–nucleus potential-energy expression indicate?AThe nucleus and electron repel each otherBThe electron-nucleus system is bound by attractive forcesCThe electron possesses a positive chargeDPotential energy is independent of distance Like 0 Discuss 0Share
MDCAT Chemistry Past PapersIBA MDCAT Chemistry Paper Reconduct 2024#Chemical Bonding#Sigma and Pi Bonds782Choose the best answerσ bonds are formed by: (IBA MDCAT Reconduct 2024)ALinear overlappingBSidewise overlappingCLateral overlappingDParallel overlapping Like 1 Discuss 0Share
Chemistry of HydrocarbonsFriedel–Crafts Acylation783Choose the best answerBenzene reacts with CH₃COCl/AlCl₃ to produce:AAcetophenoneBTolueneCBenzoic acidDBenzaldehyde Like 1 Discuss 0Share
Nomenclature of Organic CompoundsNomenclature of Organic Compounds MCQs#Organic Nomenclature784Choose the best answerFor CH₃CH₂C(CH₃)₂CH(CH₃)CH₃, which locant set is obtained by correct IUPAC numbering?A3,3,4B3,4,4C2,3,3D2,2,3 Like 4 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Physical Change785Choose the best answerIdentify the physical change among the following.ARusting of ironBBurning magnesium ribbonCBurning a candleDMelting wax Like 0 Discuss 0Share