StoichiometryMolecular Mass2236Choose the best answerThe mass of one H₂O molecule is approximately:A18 uB18 g mol⁻¹C18 mgD18 × 10⁻³ kg mol⁻¹ Like 0 Discuss 0Share
Chemistry of HydrocarbonsElimination Reactions2237Choose the best answerWhich conversion represents elimination rather than addition or substitution?ACH₃CH₂OH → CH₂=CH₂ + H₂OBCH₂=CH₂ + H₂ → CH₃CH₃CCH₄ + Cl₂ → CH₃Cl + HClDCH₂=CH₂ + Br₂ → BrCH₂CH₂Br Like 0 Discuss 0Share
ElectrochemistryStandard Hydrogen Electrode2238Choose the best answerWhich statement is NOT correct for the standard hydrogen electrode?APlatinum black is used on the Pt electrodeBThe standard temperature is commonly taken as 298 KCA 1 M H₂SO₄ solution is specifically requiredDIt is used as a reference for measuring electrode potentials Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Hair Dyes2239Choose the best answerHow do temporary hair dyes mainly differ from permanent hair dyes?ARemain until the hair grows outBWash out after a few washesCAlways require hydrogen peroxideDPermanently alter the hair color Like 0 Discuss 0Share
Chemical BondingHybridization2240Choose the best answerIn the simple hybridization model, nitrogen in NF₃ is:Asp² hybridizedBsp hybridizedCsp³ hybridizedDsp³d² hybridized Like 0 Discuss 0Share