Fundamental Principles of Organic ChemistryPolarimetry126Choose the best answerWhich instrument is used to measure optical activity?ASpectrometerBPolarimeterCColorimeterDRefractometer Like 0 Discuss 0Share
Atomic Structure STBAtomic Structure MCQs (STB)#Atomic Structure#Bohr Model127Choose the best answerAccording to Bohr’s model, what happens to an electron while it remains in an allowed stationary orbit?AContinuously radiates energyBGradually loses energyCNeither absorbs nor emits energyDFalls into the nucleus Like 0 Discuss 0Share
UHS MDCAT 2024 Chemistry#Chemical Kinetics#Rate Law128Choose the best answerIf a reaction rate does not change with concentration then it is:A3rd orderB2nd orderC1st orderDZero order Like 1 Discuss 0Share
Atomic StructureIsoelectronic Species129Choose the best answerWhich pair is isoelectronic?ACO₂ and NO₂BNO₂⁻ and CO₂CCN⁻ and CODSO₂ and CO₂ Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Limiting Reagent#Stoichiometry130Choose 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