Atomic StructureIsobars1226Choose the best answerWhich one of the following pairs represents isobars?A³₂He and ⁴₂HeB²⁴₁₂Mg and ²⁵₁₂MgC⁴⁰₁₉K and ⁴⁰₂₀CaD³⁹₁₉K and ⁴⁰₁₉K Like 0 Discuss 0Share
Atomic StructureUnpaired Electrons in Ions1227Choose the best answerWhich ion has the greatest number of unpaired electrons?AMg²⁺BTi³⁺CV³⁺DFe²⁺ Like 0 Discuss 0Share
Classification of Hydrocarbons and IsomerismClassification of hydrocarbons, structural & geometrical isomerism#Empirical and Molecular Formula#Stoichiometry1228Choose the best answerCompounds having the molecular formula C₄H₁₁N can show:AChain isomerism onlyBPosition and metamerism onlyCFunctional isomerism onlyDChain, position, metamerism and functional isomerism Like 0 Discuss 0Share
GasesMolar Volume at STP1229Choose the best answerAt STP (273 K and 1 atm), one mole of an ideal gas occupies approximately:A11.2 dm³B22.4 dm³C44.8 dm³D1.0 dm³ Like 0 Discuss 0Share
Chemistry of HydrocarbonsPhysical States of Hydrocarbons1230Choose the best answerWhich of the following hydrocarbons is expected to be a liquid under ordinary conditions?AButaneBPropeneCPentyneDButyne Like 1 Discuss 0Share