Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Isotopes1341Choose the best answerWhich industrial quantity can be measured using radioactive isotopes?AThe age of fossils onlyBThe density of metal sheets and thickness of plastic filmsCThe atomic mass of metalsDThe melting points of solids Like 0 Discuss 0Share
Alcohols and PhenolsPreparation of Alcohols by Reduction of Aldehydes1342Choose the best answerReduction of an aldehyde with LiAlH₄ followed by hydrolysis produces:APrimary alcoholBSecondary alcoholCTertiary alcoholDCarboxylic acid Like 0 Discuss 0Share
Industrial ChemistrySimple Proteins1343Choose the best answerA protein that yields only amino acids on complete hydrolysis is classified as a:AConjugated proteinBDerived proteinCSimple proteinDFibrous carbohydrate Like 0 Discuss 0Share
StoichiometryMolar Mass from Gas Volume1344Choose the best answerA 7.5 g sample of a gas occupies 5.6 dm³ at STP (273 K and 1 atm). Its molar mass is:A28 g mol⁻¹B30 g mol⁻¹C32 g mol⁻¹D44 g mol⁻¹ Like 0 Discuss 0Share
Periodic TableElectron Affinity1345Choose the best answerWhich is the correct increasing order of electron-accepting tendency among the given Period 2 elements?AB < Li < C < O < FBLi < B < C < O < FCB < Li < O < C < FDLi < B < O < C < F Like 0 Discuss 0Share