UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Chemical Bonding#Molecular Geometry36Choose the best answerMolecules having one lone pair and three bond pairs have geometrical shape:ABent or angularBTrigonalCTrigonal pyramidalDTrigonal planar Like 1 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Percentage Yield#Stoichiometry37Choose the best answerA chemical reaction has a theoretical yield of 25 g, but only 20 g of product was obtained, What is the percentage yield of the reaction?A20%B25%C45%D80% Like 3 Discuss 3Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Gases#Ideal Gas Equation38Choose the best answerValue of R gas constant in J·mol⁻¹·K⁻¹ is:A8.314B62.4C0.821D62400 Like 0 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Atomic Structure#Quantum Numbers39Choose the best answerWhich set of quantum numbers is not allowed for an electron:An=2, l=1, m=0, s=+½Bn=3, l=0, m=0, s=-½Cn=2, l=2, m=1, s=+½Dn=1, l=0, m=0, s=+½ Like 1 Discuss 0Share
UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Alcohols#Alcohols and Phenols40Choose 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