Chemical BondingElectronegativity and Bond Type726Choose the best answerIn the simplified electronegativity-difference scale, ΔEN ≈ 1.7 represents:AA completely non-polar bondBA 100% ionic bondCA 100% covalent bondDThe approximate boundary between polar covalent and ionic character Like 0 Discuss 0Share
Gasesvan der Waals Constant a727Choose the best answerThe van der Waals constant a is a measure of:AMolecular volumeBIntermolecular attractive forcesCNumber of molesDAbsolute temperature Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Chemical Kinetics#Rate Law728Choose the best answerQ.83 Rate of reaction increases by the addition of catalyst because:ACatalyst reacts with reactantBCatalyst reacts with productCEnergy of activation decreasesDEnergy of activation increases Like 0 Discuss 0Share
BasicsStoichiometry #Mole Concept729Choose the best answerWhich statement correctly describes the particles present in 1 mole of CaCO₃?A6.02 × 10²³ molecules of CaCO₃B6.02 × 10²³ formula units of CaCO₃C6.02 × 10²³ Ca atoms onlyD6.02 × 10²³ g of CaCO₃ Like 0 Discuss 0Share
MDCAT Chemistry Past Papers 2024Sindh MDCAT Chemistry Past Paper 2024#Alkyl Halides#SN1 Reaction730Choose the best answerThe rate of SN₁ mechanism depends upon:AConcentration of nucleophileBConcentration of both substrate and nucleophileCPolar non-polar solventDConcentration of substrate only Like 0 Discuss 0Share