Sindh MDCAT 2022 Chemistry#Alcohols#Alcohols and Phenols436Choose the best answerAlkyl halide on reaction with aqueous NaOH gives an alcohol. The mechanism is: (Sindh MDCAT 2022)ASNBEliminationCDecompositionDElectrophilic substitution reaction Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Electrochemistry#Oxidation Number Method437Choose the best answerNO₂⁻ → NO₃⁻ + ne⁻. Value of "n" by the oxidation number method is: (BUMHS MDCAT 2025)A1B2C3D6 Like 0 Discuss 0Share6
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model438Choose the best answerWhat is the numerical value of the Bohr radius?A0.529 × 10⁻⁸ cmB1.602 × 10⁻¹⁹ cmC8.84 × 10⁻¹² cmD6.625 × 10⁻³⁴ cm Like 0 Discuss 0Share
Chemical BondingIonic Bond Formation439Choose the best answerWhich orbital is specifically responsible for formation of an ionic bond?Apₓ orbitalBpᵧ orbitalC2p orbital onlyDNo particular overlapping orbital is required Like 0 Discuss 0Share
Industrial ChemistryAuxochromes440Choose the best answerWhat is the principal role of an auxochrome in a dye molecule?AIt destroys the color of the dye.BIt enhances color and can improve attachment of the dye to a material.CIt acts as a polymerization catalyst.DIt removes dye from fabric. Like 0 Discuss 0Share