Stoichiometry#Atomic Structure#Isotopes2736Choose the best answerWho introduced the concept of isotopes?ABerzeliusBJ.J ThomsonCSoddyDAbraham Like 0 Discuss 0Share
Carboxylic AcidsPreparation of Acyl Chlorides2737Choose the best answerAcetic acid reacts with SOCl₂ to form:AAcetaldehydeBAcetyl chlorideCAcetic anhydrideDEthyl acetate Like 0 Discuss 0Share
Gasesvan der Waals Constant a2738Choose the best answerThe van der Waals constant a for O₂, N₂, NH₃ and CH₄ is given as 1.360, 1.390, 1.370 and 1.350, respectively. Based only on these values, which gas has the strongest intermolecular attraction?AO₂BN₂CNH₃DCH₄ Like 0 Discuss 0Share
Sindh MDCAT 2021 Chemistry#Ores of Aluminium#S- and P-Block Elements2739Choose the best answerDiaspore is an ore of:ACopperBZincCIronDAluminium Like 0 Discuss 0Share
SolidsMolecular Solids2740Choose the best answerMolecular solids generally have low melting points because they contain:AStrong ionic bondsBWeak intermolecular forces between moleculesCLarge numbers of free electronsDStrong covalent bonds throughout the crystal Like 0 Discuss 0Share