Chemical KineticsActivation Energy and Temperature Dependence796Choose the best answerIf the activation energy of a reaction is zero, its rate constant is:AStrongly increased by temperatureBDecreased by increasing temperatureCDecreased by decreasing temperatureDApproximately independent of temperature Like 0 Discuss 0Share
MDCAT Chemistry Paper 2025#Catalytic Properties#Transition Elements797Choose the best answerFormic acid reacts with ethanol in presence of acid catalyst produces: (IBA MDCAT 2025)AEsterBEtherCAcid anhydrideDPhenol Like 0 Discuss 0Share
Chemistry of HydrocarbonsWolff–Kishner Reduction798Choose the best answerWolff–Kishner reduction is carried out using:AZn(Hg)/HClBNH₂NH₂/KOH and heatCH₂/NiDNa/dry ether Like 1 Discuss 0Share
Chemical KineticsArrhenius Plot and Activation Energy799Choose the best answerFor a plot of log k against 1/T, the magnitude of slope × 2.303R equals:AThreshold energyBFrequency factorCInternal energyDActivation energy Like 0 Discuss 0Share
ElectrochemistryStandard Cell Potential800Choose the best answerGiven: Ag⁺ + e⁻ → Ag E° = +0.80 V Al³⁺ + 3e⁻ → Al E° = −1.67 V The standard cell potential is:A+2.47 VB+0.87 VC−0.87 VD+5.81 V Like 0 Discuss 0Share