Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model496Choose the best answerAn electron falls from E₂ to the lower level E₁. What is the energy of the emitted photon?AE₁ − E₂BE₂ − E₁CE₁ + E₂DE₂/E₁ Like 0 Discuss 0Share
LiquidsIntermolecular Forces and Boiling Point497Choose the best answerAmong substances A, B and C with IMF strength A < B < C, which has the lowest expected boiling point?AABBCCDAll are equal Like 0 Discuss 0Share
Sindh MDCAT 2022 Chemistry#Alcohols#Alcohols and Phenols498Choose 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 Method499Choose 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 Model500Choose 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