Atomic StructureValence-Shell Electronic Configuration1256Choose the best answerWhich element has the valence-shell configuration 3s²?AHeBNaCMgDK Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Enzymes#Macromolecules1257Choose the best answerWhich species can act as an enzyme cofactor?AFe²⁺BGlucoseCAmino acidDStarch Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Atoms1258Choose the best answerWhat mass of glucose, C₆H₁₂O₆, contains 3 mol hydrogen atoms?A180 gB90 gC45 gDNone of these Like 1 Discuss 0Share
Chemical KineticsFirst-Order Rate Constant1259Choose the best answerFor a first-order reaction, [A] = 2.0 mol dm⁻³ and Rate = 0.6 mol dm⁻³ s⁻¹. The rate constant is:A1 s⁻¹B0.3 s⁻¹C0.6 s⁻¹D0.9 s⁻¹ Like 0 Discuss 0Share
Atomic StructureIsotones1260Choose the best answerThe atoms ³¹₁₅P and ³²₁₆S have the same:AMass numberBNumber of electronsCNumber of neutronsDNumber of protons Like 0 Discuss 0Share