Atomic StructureIsoelectronic Species2576Choose the best answerWhich of the following species are isoelectronic? I. CH₃⁺ II. NH₂⁻ III. NH₄⁺ IV. NH₃AI, II and IIIBII, III and IVCI, II and IVDI and II Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Alkanes#Chemistry of Hydrocarbons2577Choose 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 Elements2578Choose 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 Classification2579Choose 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#Electrolysis2580Choose 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