XIIMDCAT Chemistry Test#Benzene & Aromatic Compounds#Benzene Structure and Properties1411Choose the best answerConsider these statements about benzene: 1. All C–C bonds in benzene have equal length. 2. Benzene gives only one disubstituted product. 3. Petroleum and coal tar are important sources of benzene. 4. In the arenium ion, the carbon bonded to the electrophile becomes sp³ hybridized. 5. Benzene contains localized π bonds. Which set contains only correct statements?A1, 2 and 3 onlyB2 and 4 onlyC1, 3 and 4 onlyD1, 3 and 5 only Like 0 Discuss 0Share
Chemical equilibrium 01Chemical equilibrium #Kc1412Choose the best answerHow does Qc differ from Kc?AQc uses equilibrium concentrations, whereas Kc uses initial concentrationsBQc uses concentrations at a given instant, whereas Kc uses equilibrium concentrationsCQc and Kc are always numerically equalDKc changes with concentration, whereas Qc remains constant Like 0 Discuss 0Share
MDCAT Chemistry Past PapersIBA MDCAT Chemistry Paper Reconduct 2024#Chemical Bonding#Lone-Pair Repulsion1413Choose the best answerRepulsion between lone pairs of electrons is: (IBA MDCAT Reconduct 2024)ALowBNo repulsionCHighDModerate Like 0 Discuss 0Share
Atomic StructureSignificance of Quantum Numbers1414Choose the best answerPrincipal, azimuthal and magnetic quantum numbers are mainly related to:ASize, shape and orientationBShape, size and orientationCSize, orientation and spinDEnergy, spin and charge Like 0 Discuss 0Share
StoichiometryMole Concept and Avogadro Constant1415Choose the best answerIf the number of entities defined as one mole were hypothetically changed from 6.02 × 10²³ to 6.02 × 10²⁰, which quantity would change?ADefinition of gramBMass associated with one mole of carbonCStoichiometric ratios in a balanced equationDRatio of elements in a compound Like 0 Discuss 0Share