Nomenclature of Organic CompoundsNomenclature of Organic Compounds MCQs#Chemical Bonding#Sigma and Pi Bonds841Choose the best answerIn which compound is a σ bond formed by sp–sp³ hybrid-orbital overlap?ACH₃–C≡C–HBHC≡CHCCH₂=CH–CH=CH₂DCH₃–CH=CH–CH₃ Like 0 Discuss 0Share
LiquidsBoiling Point and External Pressure842Choose the best answerThe boiling point of a liquid increases when:AExternal pressure increasesBSurface area increasesCAmount of liquid increasesDContainer size increases Like 0 Discuss 0Share
Sindh MDCAT 2020 Chemistry#Benzene & Aromatic Compounds#Friedel-Crafts Acylation843Choose the best answerAcetophenone can be formed by which of the following reaction of benzene? (Sindh MDCAT 2020)AAlkylationBAcylationCHalogenationDNitration Like 0 Discuss 0Share
LiquidsBoiling Point844Choose the best answerWhy does water have a much higher boiling point than hydrogen sulfide (H₂S)?AWater has a higher molar massBH₂S forms stronger covalent bondsCWater is less polarDWater molecules form strong hydrogen bonds Like 2 Discuss 0Share
MDCAT Chemistry Paper 2025#Electrochemistry#Standard Hydrogen Electrode845Choose the best answerWhen SHE is connected with Cu electrode using salt bridge and external wire: (IBA MDCAT 2025)ACu reducesBCu²⁺ reducesCH⁺ reducesDH₂ reduces Like 3 Discuss 0Share