MDCAT Chemistry Paper 2025#Limiting Reagent#Stoichiometry2171Choose the best answer50g of Mg is burnt with 32g of oxygen to form MgO, amount of excess reagent left is? (IBA MDCAT 2025)A6g MgB2g MgC8g O₂D16g O₂ Like 0 Discuss 0Share
XIIMDCAT Chemistry Test#Adhesives#Industrial Chemistry2172Choose the best answerWood glue is mainly based on:APVC basedBCyanoacrylateCPVA basedDEpoxy resins Like 1 Discuss 0Share
StoichiometryMole–Mass Conversion2173Choose the best answerWhat is the mass of 1.5 mol H₂O?A15 gB18 gC27 gD150 g Like 0 Discuss 0Share
Chemistry of HydrocarbonsActivating and Deactivating Groups2174Choose the best answerWhich order best represents the overall activating or electron-donating effect of these substituents on a benzene ring?A–NH₂ > –OH > –CH₃ > H > –Cl > –NO₂B–NO₂ > –Cl > H > –CH₃ > –OH > –NH₂CH > –CH₃ > –OH > –NH₂ > –Cl > –NO₂D–OH > –NH₂ > –CH₃ > H > –NO₂ > –Cl Like 1 Discuss 0Share
Chemistry of HydrocarbonsDirective Influence of Substituents2175Choose the best answerOrtho-para directing groups are generally:AActivating groupsBDeactivating groupsCAlways neutral groupsDAlways meta directors Like 0 Discuss 0Share