XIIMDCAT Chemistry Test#Empirical and Molecular Formula#Stoichiometry2321Choose the best answerWhich molecular formula is correct for pyridine?AC₆H₅NBC₅H₆NCC₅H₅NDC₆H₆N Like 0 Discuss 0Share
SolidsProperties of Graphite2322Choose the best answerGraphite feels soft and greasy mainly because:AIts covalent bonds are weakBIts layers can slide over one anotherCIt contains mobile ionsDIt has a low melting point Like 0 Discuss 0Share
KMU MDCAT 2024 Chemistry#Stoichiometric Calculations#Stoichiometry2323Choose the best answerWhat mass of aluminium oxide (Al₂O₃) is produced from 18.5g of Al metal, when it reacts completely with oxygen gas according to the following equation? 4Al(s) + 3O₂(g) → 2Al₂O₃(s) (KMU MDCAT 2024)A30.8gB32.6gC34.9gD36.5g Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Molecules2324Choose the best answerHow many H₂ molecules are present in 0.20 g H₂? Molar mass of H₂ = 2.016 g mol⁻¹A(0.20/2.016) × 6.02 × 10²³B(2.016/0.20) × 6.02 × 10²³C0.20 × 1.008DNone of these Like 0 Discuss 0Share
MDCAT Chemistry Past PapersIBA MDCAT Chemistry Paper Reconduct 2024#Nomenclature of Organic Compounds#Organic Nomenclature2325Choose the best answerWhat is the IUPAC name of the compound CH₃–CH(CH₃)–CH₂–CH(CH₃)–CH₃? (IBA MDCAT Reconduct 2024)A1,2-DimethylpentaneB2,4-DimethylpentaneCn-HeptaneDDi-isoheptane Like 0 Discuss 0Share