Sindh MDCAT 2021 Chemistry#Passivation of Aluminium#S- and P-Block Elements796Choose the best answerAluminium does not react with:AH₂SO₄BH₃PO₄CHNO₃DHCl Like 0 Discuss 0Share
LiquidsLondon Dispersion Forces797Choose 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 Protons798Choose 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 Hydrocarbons799Choose 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
Classification of Hydrocarbons and IsomerismClassification of hydrocarbons, structural & geometrical isomerism#Functional Groups#Fundamental Principles of Organic Chemistry800Choose the best answerConsider these statements about structural isomers: I. They may have the same carbon skeleton but different functional groups. II. They may have the same functional group but different carbon skeletons. III. They must always have different chemical properties. IV. They may differ in the number of C–C σ bonds. V. They have the same empirical formula. Which combination contains only correct statements?AI, II and III onlyBI, II, IV and V onlyCII, III, IV and V onlyDI, III and V only Like 2 Discuss 0Share