Nomenclature of Organic CompoundsNomenclature of Organic Compounds MCQs#Chemical Bonding#Sigma and Pi Bonds801Choose the best answerHow many σ and π bonds are present in CH₂=CH–C≡CH, respectively?A7σ, 3πB5σ, 2πC8σ, 3πD6σ, 2π Like 0 Discuss 0Share
Stoichiometry#Atomic Structure#Isotopes802Choose the best answerWhich technique is used to determine relative isotopic abundance?AX-ray diffractionBMass spectrometryCFlame testDChromatography Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Quantum Numbers803Choose the best answerHow many quantum numbers are needed to completely describe an electron in an atom?ATwo quantum numbersBThree quantum numbersCFour quantum numbersDFive quantum numbers Like 1 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Chemical Equilibrium#Le Chatelier's Principle804Choose the best answerOne can estimate the direction in which equilibrium will shift with the help of: (UHS MDCAT 2023)ALe chatlier's principleBLaw of mass actionCHess's lawDLaw of heat of formation Like 1 Discuss 0Share
LiquidsVapour Pressure805Choose the best answerWhich statement is incorrect?AEvaporation can occur spontaneouslyBEvaporation is a surface phenomenonCVapour pressure decreases as temperature increasesDA non-volatile solute can lower the vapour pressure of a solvent Like 0 Discuss 0Share