Atomic StructurePauli Exclusion Principle416Choose the best answerAccording to Pauli's exclusion principle:AAll electrons in an atom have identical quantum numbersBNo two electrons in an atom can have the same set of all four quantum numbersCElectrons always occupy higher-energy orbitals firstDAll electrons in a subshell must have parallel spins Like 0 Discuss 0Share
MDCAT Chemistry Past Paper 2023#Alcohols#Alcohols and Phenols417Choose the best answerWhich of the following reactions can be used for the conversion of ethyl alcohol into acetaldehyde? (MDCAT 2023)APolymerizationBDehydrogenationCEsterificationDReduction Like 0 Discuss 0Share
Sindh MDCAT 2021 Chemistry#Chemical Bonding#Hybridization418Choose the best answerThe hybridization in carbonyl group is:AspBsp²Csp³Ddsp2 Like 0 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Geometrical Isomerism#Isomerism419Choose the best answerWhich pair represents geometrical isomers of 1,2-dimethylcyclopropane? (Sindh MDCAT 2020)Acis-1,2-Dimethylcyclopropane and trans-1,2-DimethylcyclopropaneBCyclopropane and propeneC1,1-Dimethylcyclopropane and cyclopropaneDMethylcyclopropane and butane Like 0 Discuss 0Share1
Alkyl HalidesSN1 and SN2 Reactions420Choose the best answerSecondary alkyl halides can undergo:ASN₁ onlyBSN₂ onlyCNeither SN₁ nor SN₂DBoth SN₁ and SN₂ depending on conditions Like 0 Discuss 0Share