Industrial chemistry Industrial chemistry MCQS#Enzymes#Macromolecules246Choose the best answerIncreasing substrate concentration increases enzyme rate until:AThe substrate becomes an enzymeBAll enzymes become saturatedCThe pH becomes neutralDThe enzyme is permanently destroyed Like 0 Discuss 0Share
SolidsFactors Affecting Lattice Energy247Choose the best answerNaF has a higher lattice energy than KF mainly because:ANa⁺ is larger than K⁺BNa⁺ is smaller than K⁺CF⁻ is larger in NaFDNaF is covalent Like 0 Discuss 0Share
Chemical BondingVSEPR Theory248Choose the best answerAccording to VSEPR theory, a central atom with three bond pairs and no lone pair has:ALinear geometryBTrigonal planar geometryCTetrahedral geometryDTrigonal pyramidal geometry Like 0 Discuss 0Share
Aldehydes and KetonesAldol Addition249Choose the best answerThe primary product of an aldol addition is:AA β-hydroxy acidBA β-hydroxy aldehyde or β-hydroxy ketoneCAn α-hydroxy aldehyde or α-hydroxy ketoneDAn α,β-unsaturated ester Like 0 Discuss 0Share
Chemical EquilibriumUnits of Kc250Choose the best answerFor A + B ⇌ C, the unit of Kc, using concentration units, is:Amol dm⁻³Bdm³ mol⁻¹Cmol dm³Ddm⁻³ mol Like 0 Discuss 0Share