UHS MDCAT 2025 Chemistryuhs mdcat chemistry 2025#Crystalline and Amorphous Solids#Solids121Choose the best answerWhich one shows anisotropic behavior?AWoodBGemstoneCCokeDGraphite Like 0 Discuss 0Share
Stoichiometry Stoichiometry MCQS#Avogadro's Law#Gases122Choose the best answerAt the same temperature and pressure, which sample occupies the greatest volume?A5 N_A molecules of H₂B10 N_A molecules of O₂C2.5 N_A molecules of CO₂D20 N_A molecules of N₂O Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Energy123Choose the best answerApproximately how much energy does one mole of ground-state hydrogen atoms have?A−131.28 kJ mol⁻¹B−1312.8 kJ mol⁻¹C−2180.0 kJ mol⁻¹D−96.5 kJ mol⁻¹ Like 0 Discuss 0Share
Chemical EquilibriumActive Mass and Reaction Rate124Choose the best answerUnder the same experimental conditions, increasing reactant concentration generally:ADecreases reaction rateBIncreases reaction rateCHas no effect on reaction rateDStops the reaction Like 0 Discuss 0Share
ElectrochemistryBalancing Redox Reactions by Ion-Electron Method125Choose the best answerTo balance the half-reaction MnO₂ + 4H⁺ → Mn²⁺ + 2H₂O, electrons must be added as:A2e⁻ on the left sideB2e⁻ on the right sideC4e⁻ on the left sideD4e⁻ on the right side Like 0 Discuss 0Share