Chemical BondingMolecular Geometry and Polarity866Choose the best answerH₂S has a net dipole moment whereas BeF₂ has zero dipole moment because:AH₂S is linear and BeF₂ is bentBH₂S is bent while BeF₂ is linearCSulfur is more electronegative than fluorineDBe is more electronegative than sulfur Like 0 Discuss 0Share
Sindh MDCAT 2021 Chemistry#Passivation of Aluminium#S- and P-Block Elements867Choose the best answerAluminium does not react with:AH₂SO₄BH₃PO₄CHNO₃DHCl Like 0 Discuss 0Share
LiquidsLondon Dispersion Forces868Choose the best answerThe force of attraction between helium atoms is mainly:AHydrogen bondingBCovalent bondingCDipole–dipole attractionDLondon dispersion force Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Protons869Choose the best answerHow many protons are present in 1 mol H₂?A6.02 × 10²³B1.20 × 10²⁴C12.04 × 10²²D6.02 × 10²⁴ Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryGeneral Formulae of Hydrocarbons870Choose the best answerWhich sequence correctly gives the general formulae of alkane, alkene, alkyne and alkyl group, respectively?ACₙH₂ₙ₊₂, CₙH₂ₙ, CₙH₂ₙ₋₂, CₙH₂ₙ₊₁BCₙH₂ₙ, CₙH₂ₙ₋₂, CₙH₂ₙ₊₂, CₙH₂ₙ₊₁CCₙH₂ₙ₊₂, CₙH₂ₙ₋₂, CₙH₂ₙ, CₙH₂ₙ₋₁DCₙH₂ₙ, CₙH₂ₙ₊₂, CₙH₂ₙ₋₂, CₙH₂ₙ₋₁ Like 0 Discuss 0Share