UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Alcohols#Alcohols and Phenols3121Choose the best answerWhich of the following best explains why phenol reacts with aqueous NaOH, but alcohols do not?APhenol has a lower boiling point than alcohol.BAlcohols contain a strong O–H bond that cannot be broken by weak bases.CPhenol form hydrogen bonding that facilitates ionization.DPhenol is weakly acidic due to resonance stabilization of phenoxide ion. Like 0 Discuss 0Share
SINDH MDCAT 2019 CHEMISTRY#Crystal Field Splitting#Transition Elements3122Choose the best answerThe ligand field effect splits five degenerate d-orbitals into two sets of different energies. The pair of higher-energy orbitals is: (Sindh MDCAT 2019)Adₓᵧ, dᵧ𝓏Bdᵧ𝓏, d𝓏ₓCdₓ²₋ᵧ², d𝓏²Ddₓ²₋ᵧ², dₓᵧ Like 0 Discuss 0Share
Industrial ChemistryNon-Competitive Inhibition3123Choose the best answerWhich statement correctly describes a non-competitive inhibitor?AIt competes directly with the substrate for the active site.BIt binds at another site on the enzyme and changes its activity.CIt always forms a peptide bond with the substrate.DIt increases enzyme activity. Like 0 Discuss 0Share
SolidsMolecular Solids3124Choose the best answerSolid CO₂ is classified as a:AMolecular solidBIonic solidCCovalent-network solidDMetallic solid Like 0 Discuss 0Share
Nomenclature of Organic CompoundsNomenclature of Organic Compounds MCQs#Chemical Bonding#Hybridization3125Choose the best answerWhich compound contains carbon atoms with more than one type of hybridization? (i) CH₃–CH₂–CH₂–CH₃ (ii) CH₃–CH=CH–CH₃ (iii) CH₂=CH–CH=CH₂ (iv) HC≡CHA(ii) and (iv)B(i) and (iv)C(ii) and (iii)D(ii) Like 0 Discuss 0Share