Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Hydrogen Spectrum656Choose the best answerWhat is produced when an electric discharge passes through molecular hydrogen?AOnly negative ionsBFree atomic hydrogen in excited statesCSolid hydrogen particlesDMulti-electron hydrogen atoms Like 0 Discuss 0Share
Basic Concepts of ChemistryPhysical and Chemical Changes657Choose the best answerWhich of the following is not a chemical change?APhotosynthesisBDigestionCTearing a paperDRusting of iron Like 0 Discuss 0Share
MDCAT Chemistry Past Papers Reconduct 2023#Macromolecules#Vitamins658Choose the best answerWhich of the following vitamins are classified as fat-soluble? (MDCAT Reconduct 2023)AD, K, and EBC, B₁₂, biotin, and folateCB₁, B₂, B₃, and B₆DB₅, B₇, B₉, and C Like 0 Discuss 0Share
Alcohols and PhenolsConversion of Alcohols to Alkyl Bromides659Choose the best answerWhich reagent converts alcohols into alkyl bromides?APBr₃BPCl₃CSOCl₂DNaBr alone Like 0 Discuss 0Share
Atomic StructureElectron Capacity of Subshells660Choose the best answerThe maximum number of electrons that can be accommodated in a subshell with azimuthal quantum number ℓ is:A2n²B2ℓ + 1Cn²D2(2ℓ + 1) Like 0 Discuss 0Share