Industrial ChemistryCross-Linked Polymers36Choose the best answerWhich structural feature characterizes a cross-linked polymer?AOnly one repeating unitBLong chains with no connections between themCA three-dimensional network formed by links between polymer chainsDPolymer chains containing exactly two types of monomers Like 0 Discuss 0Share
Industrial ChemistryDenaturation of Proteins37Choose the best answerHeating or a large change in pH may cause a protein to lose its normal three-dimensional structure. This process is called:AHydrolysisBDenaturationCPolymerizationDNeutralization Like 0 Discuss 0Share
Industrial ChemistryInduced-Fit Model38Choose the best answerAccording to the induced-fit model, an enzyme:AHas a completely rigid active site.BChanges its shape slightly to improve substrate binding.CPermanently changes into the product.DBinds the substrate only after the reaction is complete. Like 0 Discuss 0Share
Industrial ChemistryPermanent Hair Dyes39Choose the best answerIn permanent oxidative hair dyes, the developer is usually:ASodium chlorideBHydrogen peroxideCEthylene glycolDFormaldehyde Like 0 Discuss 0Share
Industrial chemistry Industrial chemistry MCQS#Hair Dyes40Choose the best answerWhich chemical is commonly used as the developer in permanent hair dyes?ASodium chlorideBHydrogen peroxideCEthylene glycolDFormaldehyde Like 0 Discuss 0Share