Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Frequency246Choose the best answerWhat is the SI unit of frequency?AJouleBHertzCMetreDSecond Like 0 Discuss 0Share
BasicsStoichiometry #Atomic Structure#Isotopes247Choose the best answerWhy do isotopes of the same element usually have similar chemical properties?AThey have the same mass numberBThey have the same electronic configurationCThey have the same number of neutronsDThey have different atomic numbers Like 0 Discuss 0Share
StoichiometryMole Concept and Number of Electrons248Choose the best answerWhat is the total number of electrons present in 1.6 g CH₄?A6.022 × 10²³B1.6 × 10²³C1.6 × 10²²D6.022 × 10²² Like 0 Discuss 0Share
LiquidsDistribution of Molecular Energies249Choose the best answerThe molecular energies in a liquid are:ANot equally distributedBMinimum for all molecules at the bottomCMaximum for all molecules in the middleDNegligible at the surface Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryCommon and IUPAC Names of Hydrocarbons250Choose the best answerThe IUPAC name of isopropyl ethylene is:A2-Methylbut-1-eneB3-Methylbut-1-eneC2-Methylbut-2-eneDPent-1-ene Like 0 Discuss 0Share