SolidsUnit Cell1066Choose 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 Stoichiometry1067Choose 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 Number1068Choose the best answerThe oxidation state of 'S' in (S₂O₃)²⁻ is: (Sindh MDCAT 2020)A+4B+6C-2D+2 Like 0 Discuss 0Share
UHS MDCAT 2023 ChemistryUHS MDCAT 2023 Past Paper#Electrical Conductivity of Metals#Solids1069Choose the best answerIn metals, why electric conductivity decreases with the increase of temperature? (UHS MDCAT 2023)ABecause electron movement decrease with the increase of temperatureBBecause metal ions oscillations hinder electron movementCBecause electron direction changes at high temperatureDBecause they pass heat current through collision of electrons Like 0 Discuss 0Share
ElectrochemistryElectrolysis of Aqueous Solutions1070Choose the best answerDuring electrolysis of aqueous NaCl, the main product formed at the cathode is:AH₂BCl₂CO₂DNa Like 0 Discuss 0Share