StoichiometryPercentage Composition by Mass1216Choose the best answerAn oxide has formula M₂O₃ and contains 68.57% oxygen by mass. The atomic mass of M is approximately:A11B22C27D56 Like 0 Discuss 0Share
SZABMU MDCAT 2025 Chemistry#Boyle's Law#Gases1217Choose the best answerHyperbola isotherm is obtained when graph is plotted between: (SZABMU MDCAT 2025)AP and 1/VBPV and VCP and VDV and 1/P Like 0 Discuss 0Share
XiMDCAT XI Complete Chemistry Grand Test#Mole Concept#Stoichiometry1218Choose the best answerWhich sample contains the greatest number of atoms?A4 g HeB46 g NaC0.40 g CaD12 g He Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryRacemic Mixture1219Choose the best answerA racemic mixture contains:AOnly the (+) enantiomerBOnly the (−) enantiomerCEqual amounts of (+) and (−) enantiomersDMeso compounds only Like 0 Discuss 0Share
Aldehydes and KetonesStructure of Aldehydes and Ketones1220Choose the best answerThe key structural difference between an aldehyde and a ketone is that an aldehyde contains:AAn α-hydrogen in every caseBA hydrogen atom directly bonded to the carbonyl carbonCBoth –OH and C=O groupsDNo carbonyl group Like 0 Discuss 0Share