Sindh MDCAT 2022 Chemistry#Alkanes#Chemistry of Hydrocarbons1331Choose the best answerGrignard reagent, e.g. methyl magnesium halide, reacting with methyl halide gives:An-Propyl chlorideBButaneCIsopropyl chlorideDEthane Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Catalytic Properties#Transition Elements1332Choose the best answerReaction of toluene with chlorine in the presence of a Lewis acid catalyst gives the major product: (BUMHS MDCAT 2025)Ao-ChlorotolueneBm-ChlorotolueneCp-ChlorotolueneDEqual amounts of ortho and para products Like 0 Discuss 0Share30
Basic Concepts of ChemistryMatter and its Classification1333Choose the best answerWhat is a pure substance?AA substance made of two or more componentsBA substance with fixed composition and distinct propertiesCA mixture of different substancesDA substance that can be separated by physical methods Like 0 Discuss 0Share
UHS MDCAT 2024 Chemistry#Electrochemistry#Electrolysis1334Choose the best answerWhich of the following is NOT a correct feature of electrolytic cells?AReduction occurs at cathodeBOxidation occurs at anodeCAlternating current source is connected to electrodesDElectrochemical reaction takes place Like 0 Discuss 0Share
Stoichiometry 11#Atomic Mass Comparison1335Choose the best answerElements A and B have atomic masses 10 u and 20 u. What is the atomic-mass ratio B:A?A1:2B2:1C1:1D4:1 Like 0 Discuss 0Share