Alkyl HalidesCarbocation Intermediate in SN1 Reaction1091Choose the best answerThe positively charged carbon atom in a simple carbocation is:Asp hybridizedBsp² hybridizedCsp³ hybridizedDdsp² hybridized Like 0 Discuss 0Share
Chemical BondingCovalent Bonding and Polar Character1092Choose the best answerA covalent bond may be:ACompletely non-polar covalentBPartially ionic due to unequal electron sharingCEither A or BDAlways 100% ionic Like 0 Discuss 0Share
Industrial ChemistryEnzyme Cofactors1093Choose the best answerWhich of the following can act as an inorganic enzyme cofactor?AFe²⁺BGlucoseCAmino acidDStarch Like 0 Discuss 0Share
StoichiometryGas Volume Stoichiometry1094Choose the best answer100 mL each of C₂H₂ and O₂ are ignited at the same temperature and pressure: 2C₂H₂ + 5O₂ → 4CO₂ + 2H₂O Assuming H₂O remains as vapour, the final gaseous mixture contains:A10 mL C₂H₂, 50 mL O₂, 40 mL CO₂ and 20 mL H₂OB5 mL O₂, 30 mL CO₂ and 15 mL H₂OC20 mL C₂H₂, 80 mL CO₂ and 40 mL H₂OD60 mL C₂H₂, 80 mL CO₂ and 40 mL H₂O Like 0 Discuss 0Share
StoichiometryMass–Mass Stoichiometry1095Choose the best answerIf 10 g CaCO₃ decomposes completely, what mass of CO₂ is released? CaCO₃ → CaO + CO₂A44 gB22 gC4.4 gD2.2 g Like 0 Discuss 0Share