UHS MDCAT 2024 Chemistry#Alkyl Halides#Substitution and Elimination416Choose the best answerIdentify the correct statement related to substitution and elimination of alkyl halides:AStrong bases causes substitution in preference to eliminationBRole of leaving groups in elimination is similar to substitutionCSubstitution is favored more than elimination by decreasing solvent polarityDDecrease in temperature will favor elimination more than substitution Like 1 Discuss 0Share
StoichiometryLimiting Reagent and Mole–Mole Stoichiometry417Choose the best answerFor the reaction: 2A + 3B → 4C 3 mol A and 5 mol B are mixed. How many moles of C are formed?A8 molB5 molC6 molD6.67 mol Like 0 Discuss 0Share
Chemical KineticsRate of Appearance of Products418Choose the best answerFor the reaction 2A ⇌ 4B + C, the concentration of B increases by 5 × 10⁻³ mol L⁻¹ in 10 s. The rate of appearance of B is:A5 × 10⁻⁴ mol L⁻¹ s⁻¹B5 × 10⁻³ mol L⁻¹ s⁻¹C6 × 10⁻⁵ mol L⁻¹ s⁻¹D4 × 10⁻⁴ mol L⁻¹ s⁻¹ Like 0 Discuss 0Share
Chemical BondingElectron-Pair Geometry and Molecular Shape419Choose the best answerWhich species has different molecular geometry and electron-pair geometry?ASO₃BSnCl₂CCO₂DBF₃ Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model420Choose the best answerAn electron falls from E₂ to the lower level E₁. What is the energy of the emitted photon?AE₁ − E₂BE₂ − E₁CE₁ + E₂DE₂/E₁ Like 0 Discuss 0Share