Industrial ChemistryEnzymes as Biological Catalysts66Choose the best answerWhich statement best describes enzymes?AThey are completely consumed during reactions.BThey are biological catalysts that increase reaction rates.CThey are carbohydrates used only for energy storage.DThey function only at very high temperatures. Like 0 Discuss 0Share
GasesPlasma State67Choose the best answerPlasma consists mainly of:ANeutral atoms onlyBIonized particles and free electronsCMolecules fixed in positionDSolid particles only Like 1 Discuss 0Share
Alkyl HalidesStereochemistry of SN1 Reaction68Choose the best answerRacemization can occur in an SN₁ reaction because:AThe nucleophile attacks only from one side.BA planar carbocation intermediate is formed.CThe reaction is concerted.DThe leaving group can never separate from the substrate. Like 0 Discuss 0Share
MDCAT Chemistry Past Papers 2024Sindh MDCAT Chemistry Past Paper 2024#Thermochemistry & Thermodynamics#Thermodynamic State Functions69Choose the best answerVolume is a:AIntensive propertyBEntropyCPath functionDState function Like 1 Discuss 0Share
Chemistry of HydrocarbonsOxidative Cleavage of Alkynes70Choose the best answerOxidative ozonolysis of alkynes generally gives:AAlcoholsBAldehydesCCarboxylic acidsDAlkanes Like 0 Discuss 0Share