Periodic TableIonization Energy Exceptions961Choose the best answerWhich pair correctly represents both exceptions in the first-ionization-energy trend of Period 2?ABe < B and N < OBBe OCBe > B and N > ODBe > B and N < O Like 0 Discuss 0Share
BUMHS MDCAT 2025 Chemistry#Macromolecules#Nylon-6,6962Choose the best answerWhich monomer is used for synthesis of nylon 6,6? (BUMHS MDCAT 2025)Asobacoyl chlorideBmethylene diamineCheptane-1,7-dioic acidDhexamethylene diamine Like 0 Discuss 0Share
MDCAT Chemistry Past Paper 2023#Atomic Structure#Quantum Numbers963Choose the best answerWhich of the following has only one orientation in space in the magnetic field? (MDCAT 2023)Ap orbitalBs orbitalCd orbitalDf orbital Like 0 Discuss 0Share
LiquidsBoiling Point964Choose the best answerA liquid boils when:AIts vapour pressure equals the external pressureBIts vapour pressure is always less than atmospheric pressureCIts vapour pressure becomes zeroDIts intermolecular forces disappear completely Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Hydrogen Spectrum965Choose 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