Industrial chemistry Industrial chemistry MCQS#Polymers2081Choose the best answerWhy are synthetic adhesives often preferred when high durability and water resistance are needed?AMade only from plant materialsBBased on chemical polymersCAlways temporaryDSoluble in water Like 0 Discuss 0Share1
Chemical BondingBond Length2082Choose the best answerWhich bond is shortest?AH–ClBO–HCN–HDH–F Like 0 Discuss 0Share
StoichiometryMass–Volume Stoichiometry2083Choose the best answerWhat volume of O₂ at STP (273 K and 1 atm) is required for complete combustion of 96 g CH₄? CH₄ + 2O₂ → CO₂ + 2H₂OA89.6 dm³B134.4 dm³C268.8 dm³D336.0 dm³ Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Adhesives2084Choose the best answerWhich statement best describes the main role of an adhesive?AProduce color in a materialBStick materials together by surface bondingCIncrease the melting point of polymersDPrevent polymerization Like 0 Discuss 0Share
Chemical KineticsActivation Energy and Reaction Rate2085Choose the best answerA small activation energy generally means that:AFew molecules undergo effective collisions and the reaction is slow.BMore molecules can undergo effective collisions and the reaction is faster.CMolecules cannot undergo effective collisions.DRate becomes independent of temperature. Like 0 Discuss 0Share