StoichiometryMole Concept and Electron Stoichiometry1091Choose the best answerWhat mass of Ca releases the same number of valence electrons as 23 g Na?A40 gB20 gC30 gD50 g Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Isotopes1092Choose the best answerWhich radioactive isotope is commonly used to date ancient organic materials?ACarbon-12BCarbon-14CUranium-238DCobalt-60 Like 0 Discuss 0Share
XIIMDCAT Chemistry Test#Chemistry of Hydrocarbons#Hydration Reactions1093Choose the best answerWhat are the main products of hydration of propene and propyne, respectively?A1-Propanol and propanalB2-Propanol and propanalCPropanone and propanolD2-Propanol and propanone Like 0 Discuss 0Share
Aldehydes and KetonesPreparation of Ketones by Oxidation of Alcohols1094Choose the best answerWhich reagent converts a secondary alcohol into a ketone?ALiAlH₄BPCCCNaBH₄DH₂/Pd Like 0 Discuss 0Share
ElectrochemistryCalculation of Oxidation Number1095Choose the best answerThe oxidation number of sulfur in SO₄²⁻ is:A−8B−6C+8D+6 Like 0 Discuss 0Share