Chemical BondingPi Bond Formation1956Choose the best answerWhich statement about a π bond is incorrect?AIt is formed directly from sp hybrid orbitalsBIt is formed by sideways overlap of parallel p orbitalsCIt normally forms in addition to an existing σ bondDIt is generally weaker than a σ bond Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Enzymes#Macromolecules1957Choose the best answerIn the induced-fit model, an enzyme:AHas a completely rigid active siteBChanges its shape slightly to improve substrate bindingCPermanently changes into the productDBinds only after the reaction is complete Like 0 Discuss 0Share
Stoichiometry#Isotopes#Stable Isotopes1958Choose the best answerWhich listed isotope is both naturally occurring and stable?A¹⁴CB¹²CC³HD²⁴Na Like 0 Discuss 0Share
Alcohols and PhenolsOxidation of Primary Alcohols1959Choose the best answerA primary alcohol is first oxidized to:AKetoneBAldehydeCCarboxylic acidDAlkene Like 0 Discuss 0Share
Fundamental Principles of Organic ChemistryOctane Number and Knocking1960Choose the best answerWhich type of hydrocarbon generally shows the greatest knocking tendency in petrol engines?AStraight-chain alkanesBBranched-chain alkanesCCycloalkanesDAromatic hydrocarbons Like 0 Discuss 0Share