Fundamental Principles of Organic ChemistryTautomerism1101Choose the best answerWhich statement about tautomers is correct?AThey can always be isolated easily.BThey are merely resonance structures.CThey exist in dynamic equilibrium.DThey have different molecular formulas. Like 0 Discuss 0Share
Stoichiometry#Isotopes#Stable Isotopes1102Choose the best answerWhich element has the greatest number of stable naturally occurring isotopes among these?ACadmiumBPalladiumCTinDNickel Like 0 Discuss 0Share
SolidsUnit Cell1103Choose the best answerThe smallest repeating structural unit of a crystal lattice is called the:ACrystal systemBLattice energyCUnit cellDCleavage plane Like 0 Discuss 0Share
StoichiometryMole–Mass Stoichiometry1104Choose the best answer1.5 mol O₂ reacts completely with Mg: 2Mg + O₂ → 2MgO What mass of Mg is consumed?A72 gB36 gC48 gD24 g Like 0 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Electrochemistry#Oxidation Number1105Choose the best answerThe oxidation state of 'S' in (S₂O₃)²⁻ is: (Sindh MDCAT 2020)A+4B+6C-2D+2 Like 0 Discuss 0Share